456021928 has 8 divisors (see below), whose sum is σ = 855041130. Its totient is φ = 228010960.

The previous prime is 456021913. The next prime is 456021931. The reversal of 456021928 is 829120654.

It can be written as a sum of positive squares in only one way, i.e., 449355204 + 6666724 = 21198^2 + 2582^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28501363 + ... + 28501378.

Almost surely, 2^456021928 is an apocalyptic number.

It is an amenable number.

456021928 is a deficient number, since it is larger than the sum of its proper divisors (399019202).

456021928 is a wasteful number, since it uses less digits than its factorization.

456021928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57002747 (or 57002743 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 456021928 is about 21354.6699342322. The cubic root of 456021928 is about 769.7125637671.

The spelling of 456021928 in words is "four hundred fifty-six million, twenty-one thousand, nine hundred twenty-eight".