57698838 has 16 divisors (see below), whose sum is σ = 128219760. Its totient is φ = 19232928.

The previous prime is 57698831. The next prime is 57698887. The reversal of 57698838 is 83889675.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1068497 = 57698838 / (5 + 7 + 6 + 9 + 8 + 8 + 3 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57698831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 534195 + ... + 534302.

It is an arithmetic number, because the mean of its divisors is an integer number (8013735).

Almost surely, 2^57698838 is an apocalyptic number.

57698838 is an abundant number, since it is smaller than the sum of its proper divisors (70520922).

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

57698838 is a wasteful number, since it uses less digits than its factorization.

57698838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068508 (or 1068502 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 57698838 is about 7595.9751184427. The cubic root of 57698838 is about 386.4165235401.

The spelling of 57698838 in words is "fifty-seven million, six hundred ninety-eight thousand, eight hundred thirty-eight".