57432198 has 16 divisors (see below), whose sum is σ = 115449840. Its totient is φ = 19046496.

The previous prime is 57432191. The next prime is 57432203. The reversal of 57432198 is 89123475.

It is a super-2 number, since 2×57432198² = 6596914734222408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57432191) 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, 23113 + ... + 25476.

It is an arithmetic number, because the mean of its divisors is an integer number (7215615).

Almost surely, 2^57432198 is an apocalyptic number.

57432198 is an abundant number, since it is smaller than the sum of its proper divisors (58017642).

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

57432198 is a wasteful number, since it uses less digits than its factorization.

57432198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48791.

The product of its digits is 60480, while the sum is 39.

The square root of 57432198 is about 7578.4033938555. The cubic root of 57432198 is about 385.8203634952.

It can be divided in two parts, 57432 and 198, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 57432198 in words is "fifty-seven million, four hundred thirty-two thousand, one hundred ninety-eight".