256000456 has 8 divisors (see below), whose sum is σ = 480000870. Its totient is φ = 128000224.

The previous prime is 256000439. The next prime is 256000463. The reversal of 256000456 is 654000652.

It can be written as a sum of positive squares in only one way, i.e., 255680100 + 320356 = 15990^2 + 566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16000021 + ... + 16000036.

Almost surely, 2^256000456 is an apocalyptic number.

It is an amenable number.

256000456 is a deficient number, since it is larger than the sum of its proper divisors (224000414).

256000456 is a wasteful number, since it uses less digits than its factorization.

256000456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32000063 (or 32000059 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 256000456 is about 16000.0142499937. The cubic root of 256000456 is about 634.9607977948.

The spelling of 256000456 in words is "two hundred fifty-six million, four hundred fifty-six", and thus it is an aban number.