20752856 has 16 divisors (see below), whose sum is σ = 39963840. Its totient is φ = 10095840.

The previous prime is 20752843. The next prime is 20752873. The reversal of 20752856 is 65825702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34760 + ... + 35351.

It is an arithmetic number, because the mean of its divisors is an integer number (2497740).

Almost surely, 2^20752856 is an apocalyptic number.

It is an amenable number.

20752856 is a deficient number, since it is larger than the sum of its proper divisors (19210984).

20752856 is a wasteful number, since it uses less digits than its factorization.

20752856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70154 (or 70150 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 20752856 is about 4555.5302655125. The cubic root of 20752856 is about 274.8058398075.

The spelling of 20752856 in words is "twenty million, seven hundred fifty-two thousand, eight hundred fifty-six".