457638864 has 80 divisors (see below), whose sum is σ = 1284679680. Its totient is φ = 139847040.

The previous prime is 457638851. The next prime is 457638887. The reversal of 457638864 is 468836754.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20179 + ... + 36365.

It is an arithmetic number, because the mean of its divisors is an integer number (16058496).

Almost surely, 2^457638864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 457638864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642339840).

457638864 is an abundant number, since it is smaller than the sum of its proper divisors (827040816).

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

457638864 is a wasteful number, since it uses less digits than its factorization.

457638864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16248 (or 16242 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 457638864 is about 21392.4955066023. The cubic root of 457638864 is about 770.6212246500.

The spelling of 457638864 in words is "four hundred fifty-seven million, six hundred thirty-eight thousand, eight hundred sixty-four".