Properties of the Number 1264

One Thousand Two Hundred Sixty-Four

Basics

Value: 1263 → 1264 → 1265

Parity: even

Prime: No

Previous Prime: 1259

Next Prime: 1277

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ⁴ × 79

Divisors: 1, 2, 4, 8, 16, 79, 158, 316, 632, 1264

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110000

Octal: 2360

Duodecimal: 894

Hexadecimal: 4f0

Square: 1597696

Square Root: 35.552777669262355

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Sum of the first n primes. A7504

Product of the 4th power of a prime (A030514) and a different prime (p⁴*q). A178739

Number of integer partitions of n into parts that are alternately unequal and equal. A351006

Numerators of convergents to e. A7676

Positive even numbers that are not the sum of a pair of twin primes. A7534

Expansion of e.g.f.: ∏_n>=1 (1 - x^2·n-1)^-1/(2·n-1). A206303

1 together with numbers of the form p·q⁴ and p⁹, where p and q are distinct primes. A30628

Starts of runs of 3 consecutive positive negabinary-Niven numbers (A331728). A331822

Triangle read by rows: T(m,n) = ∑_{-m<i<m, -n<j<n, gcd{i,j}=1} (m-|i|)*(n-|j|), m >= n >= 1. A332350

Starts of runs of 3 consecutive Gray-code Niven numbers (A344341). A344343