20970590 has 16 divisors (see below), whose sum is σ = 38025072. Its totient is φ = 8326464.

The previous prime is 20970589. The next prime is 20970617. The reversal of 20970590 is 9507902.

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, 6284 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (2376567).

Almost surely, 2^20970590 is an apocalyptic number.

20970590 is a deficient number, since it is larger than the sum of its proper divisors (17054482).

20970590 is a wasteful number, since it uses less digits than its factorization.

20970590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15451.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 20970590 is about 4579.3656765976. The cubic root of 20970590 is about 275.7635638798.

The spelling of 20970590 in words is "twenty million, nine hundred seventy thousand, five hundred ninety".