457857812 has 6 divisors (see below), whose sum is σ = 801251178. Its totient is φ = 228928904.

The previous prime is 457857811. The next prime is 457857847. The reversal of 457857812 is 218758754.

It can be written as a sum of positive squares in only one way, i.e., 442849936 + 15007876 = 21044^2 + 3874^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457857811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57232223 + ... + 57232230.

It is an arithmetic number, because the mean of its divisors is an integer number (133541863).

Almost surely, 2^457857812 is an apocalyptic number.

It is an amenable number.

457857812 is a deficient number, since it is larger than the sum of its proper divisors (343393366).

457857812 is a wasteful number, since it uses less digits than its factorization.

457857812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114464457 (or 114464455 counting only the distinct ones).

The product of its digits is 627200, while the sum is 47.

The square root of 457857812 is about 21397.6122967026. The cubic root of 457857812 is about 770.7441010696.

The spelling of 457857812 in words is "four hundred fifty-seven million, eight hundred fifty-seven thousand, eight hundred twelve".