57398208 has 84 divisors (see below), whose sum is σ = 176689512. Its totient is φ = 16396800.

The previous prime is 57398207. The next prime is 57398213. The reversal of 57398208 is 80289375.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×57398208² = 6589108563222528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 57398208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57398203) 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, 6358 + ... + 12458.

Almost surely, 2^57398208 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 57398208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88344756).

57398208 is an abundant number, since it is smaller than the sum of its proper divisors (119291304).

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

57398208 is a wasteful number, since it uses less digits than its factorization.

57398208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130 (or 6113 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 57398208 is about 7576.1605051635. The cubic root of 57398208 is about 385.7442353386.

The spelling of 57398208 in words is "fifty-seven million, three hundred ninety-eight thousand, two hundred eight".