82631457 has 12 divisors (see below), whose sum is σ = 119705040. Its totient is φ = 54926808.

The previous prime is 82631449. The next prime is 82631467. The reversal of 82631457 is 75413628.

It is not a de Polignac number, because 82631457 - 2³ = 82631449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82631467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10107 + ... + 16352.

It is an arithmetic number, because the mean of its divisors is an integer number (9975420).

Almost surely, 2^82631457 is an apocalyptic number.

It is an amenable number.

82631457 is a deficient number, since it is larger than the sum of its proper divisors (37073583).

82631457 is a wasteful number, since it uses less digits than its factorization.

82631457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26812 (or 26809 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 82631457 is about 9090.1846515899. The cubic root of 82631457 is about 435.5604824424.

The spelling of 82631457 in words is "eighty-two million, six hundred thirty-one thousand, four hundred fifty-seven".