457021508 has 12 divisors (see below), whose sum is σ = 801745980. Its totient is φ = 227951232.

The previous prime is 457021507. The next prime is 457021517. The reversal of 457021508 is 805120754.

It can be written as a sum of positive squares in 2 ways, for example, as 334963204 + 122058304 = 18302^2 + 11048^2 .

It is not an unprimeable number, because it can be changed into a prime (457021507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138041 + ... + 141312.

It is an arithmetic number, because the mean of its divisors is an integer number (66812165).

Almost surely, 2^457021508 is an apocalyptic number.

It is an amenable number.

457021508 is a deficient number, since it is larger than the sum of its proper divisors (344724472).

457021508 is a wasteful number, since it uses less digits than its factorization.

457021508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279766 (or 279764 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 457021508 is about 21378.0613714153. The cubic root of 457021508 is about 770.2745453773.

The spelling of 457021508 in words is "four hundred fifty-seven million, twenty-one thousand, five hundred eight".