57631398 has 32 divisors (see below), whose sum is σ = 126012672. Its totient is φ = 17426400.

The previous prime is 57631393. The next prime is 57631477. The reversal of 57631398 is 89313675.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57631393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53788 + ... + 54848.

It is an arithmetic number, because the mean of its divisors is an integer number (3937896).

Almost surely, 2^57631398 is an apocalyptic number.

57631398 is an abundant number, since it is smaller than the sum of its proper divisors (68381274).

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

57631398 is a wasteful number, since it uses less digits than its factorization.

57631398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900.

The product of its digits is 136080, while the sum is 42.

The square root of 57631398 is about 7591.5346274650. The cubic root of 57631398 is about 386.2659134006.

The spelling of 57631398 in words is "fifty-seven million, six hundred thirty-one thousand, three hundred ninety-eight".