57023420 has 12 divisors (see below), whose sum is σ = 119749224. Its totient is φ = 22809360.

The previous prime is 57023419. The next prime is 57023443. The reversal of 57023420 is 2432075.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1425566 + ... + 1425605.

It is an arithmetic number, because the mean of its divisors is an integer number (9979102).

Almost surely, 2^57023420 is an apocalyptic number.

It is an amenable number.

57023420 is an abundant number, since it is smaller than the sum of its proper divisors (62725804).

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

57023420 is a wasteful number, since it uses less digits than its factorization.

57023420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2851180 (or 2851178 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 57023420 is about 7551.3853033731. The cubic root of 57023420 is about 384.9028146218.

Adding to 57023420 its reverse (2432075), we get a palindrome (59455495).

The spelling of 57023420 in words is "fifty-seven million, twenty-three thousand, four hundred twenty".