57230020 has 48 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 22156544.

The previous prime is 57229981. The next prime is 57230023. The reversal of 57230020 is 2003275.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 57230020.

It is not an unprimeable number, because it can be changed into a prime (57230023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100296 + ... + 100864.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^57230020 is an apocalyptic number.

It is an amenable number.

57230020 is an abundant number, since it is smaller than the sum of its proper divisors (66874940).

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

57230020 is a wasteful number, since it uses less digits than its factorization.

57230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 57230020 is about 7565.0525444309. The cubic root of 57230020 is about 385.3670979966.

Adding to 57230020 its reverse (2003275), we get a palindrome (59233295).

The spelling of 57230020 in words is "fifty-seven million, two hundred thirty thousand, twenty".