57372420 has 48 divisors (see below), whose sum is σ = 183593088. Its totient is φ = 13113600.

The previous prime is 57372409. The next prime is 57372421. The reversal of 57372420 is 2427375.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (57372421) 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, 67881 + ... + 68720.

It is an arithmetic number, because the mean of its divisors is an integer number (3824856).

Almost surely, 2^57372420 is an apocalyptic number.

It is an amenable number.

57372420 is an abundant number, since it is smaller than the sum of its proper divisors (126220668).

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

57372420 is a wasteful number, since it uses less digits than its factorization.

57372420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136620 (or 136618 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57372420 is about 7574.4583964796. The cubic root of 57372420 is about 385.6864573299.

Adding to 57372420 its reverse (2427375), we get a palindrome (59799795).

The spelling of 57372420 in words is "fifty-seven million, three hundred seventy-two thousand, four hundred twenty".