64001256 has 48 divisors (see below), whose sum is σ = 175879200. Its totient is φ = 19393440.

The previous prime is 64001237. The next prime is 64001303. The reversal of 64001256 is 65210046.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8116 + ... + 13923.

It is an arithmetic number, because the mean of its divisors is an integer number (3664150).

Almost surely, 2^64001256 is an apocalyptic number.

64001256 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

64001256 is an abundant number, since it is smaller than the sum of its proper divisors (111877944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64001256 is a wasteful number, since it uses less digits than its factorization.

64001256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22070 (or 22055 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 64001256 is about 8000.0784996149. The cubic root of 64001256 is about 400.0026166495.

The spelling of 64001256 in words is "sixty-four million, one thousand, two hundred fifty-six".