457636812 has 72 divisors (see below), whose sum is σ = 1136142000. Its totient is φ = 143344512.

The previous prime is 457636807. The next prime is 457636853. The reversal of 457636812 is 218636754.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645114 + ... + 645822.

It is an arithmetic number, because the mean of its divisors is an integer number (15779750).

Almost surely, 2^457636812 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 457636812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568071000).

457636812 is an abundant number, since it is smaller than the sum of its proper divisors (678505188).

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

457636812 is a wasteful number, since it uses less digits than its factorization.

457636812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 882 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 457636812 is about 21392.4475458046. The cubic root of 457636812 is about 770.6200728560.

The spelling of 457636812 in words is "four hundred fifty-seven million, six hundred thirty-six thousand, eight hundred twelve".