20056940 has 24 divisors (see below), whose sum is σ = 44597952. Its totient is φ = 7550720.

The previous prime is 20056903. The next prime is 20056961. The reversal of 20056940 is 4965002.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29156 + ... + 29835.

It is an arithmetic number, because the mean of its divisors is an integer number (1858248).

Almost surely, 2^20056940 is an apocalyptic number.

20056940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20056940 is an abundant number, since it is smaller than the sum of its proper divisors (24541012).

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

20056940 is a wasteful number, since it uses less digits than its factorization.

20056940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59017 (or 59015 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20056940 is about 4478.4975159087. The cubic root of 20056940 is about 271.6991158165.

The spelling of 20056940 in words is "twenty million, fifty-six thousand, nine hundred forty".