56840020 has 24 divisors (see below), whose sum is σ = 125647200. Its totient is φ = 21539232.

The previous prime is 56840011. The next prime is 56840033. The reversal of 56840020 is 2004865.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74410 + ... + 75169.

It is an arithmetic number, because the mean of its divisors is an integer number (5235300).

Almost surely, 2^56840020 is an apocalyptic number.

It is an amenable number.

56840020 is an abundant number, since it is smaller than the sum of its proper divisors (68807180).

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

56840020 is a wasteful number, since it uses less digits than its factorization.

56840020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149607 (or 149605 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 56840020 is about 7539.2320563835. The cubic root of 56840020 is about 384.4897270945.

Adding to 56840020 its reverse (2004865), we get a palindrome (58844885).

The spelling of 56840020 in words is "fifty-six million, eight hundred forty thousand, twenty".