20870704 has 10 divisors (see below), whose sum is σ = 40437020. Its totient is φ = 10435344.

The previous prime is 20870693. The next prime is 20870743. The reversal of 20870704 is 40707802.

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 as a sum of consecutive naturals, namely, 652194 + ... + 652225.

It is an arithmetic number, because the mean of its divisors is an integer number (4043702).

Almost surely, 2^20870704 is an apocalyptic number.

It is an amenable number.

20870704 is a deficient number, since it is larger than the sum of its proper divisors (19566316).

20870704 is a wasteful number, since it uses less digits than its factorization.

20870704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304427 (or 1304421 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 20870704 is about 4568.4465631109. The cubic root of 20870704 is about 275.3250327602.

The spelling of 20870704 in words is "twenty million, eight hundred seventy thousand, seven hundred four".