457664138 has 16 divisors (see below), whose sum is σ = 712721160. Its totient is φ = 220147200.

The previous prime is 457664117. The next prime is 457664159. The reversal of 457664138 is 831466754.

It is an interprime number because it is at equal distance from previous prime (457664117) and next prime (457664159).

It can be written as a sum of positive squares in 4 ways, for example, as 380523049 + 77141089 = 19507^2 + 8783^2 .

It is a super-2 number, since 2×457664138² = 418912926422566088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2258 + ... + 30338.

Almost surely, 2^457664138 is an apocalyptic number.

457664138 is a deficient number, since it is larger than the sum of its proper divisors (255057022).

457664138 is a wasteful number, since it uses less digits than its factorization.

457664138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28393.

The product of its digits is 483840, while the sum is 44.

The square root of 457664138 is about 21393.0862196178. The cubic root of 457664138 is about 770.6354107429.

The spelling of 457664138 in words is "four hundred fifty-seven million, six hundred sixty-four thousand, one hundred thirty-eight".