20502704 has 20 divisors (see below), whose sum is σ = 39937920. Its totient is φ = 10196160.

The previous prime is 20502673. The next prime is 20502719. The reversal of 20502704 is 40720502.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 299 + ... + 6410.

It is an arithmetic number, because the mean of its divisors is an integer number (1996896).

Almost surely, 2^20502704 is an apocalyptic number.

It is an amenable number.

20502704 is a deficient number, since it is larger than the sum of its proper divisors (19435216).

20502704 is a wasteful number, since it uses less digits than its factorization.

20502704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6908 (or 6902 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 20502704 is about 4527.9911660691. The cubic root of 20502704 is about 273.6972164586.

The spelling of 20502704 in words is "twenty million, five hundred two thousand, seven hundred four".