20970710 has 32 divisors (see below), whose sum is σ = 39960000. Its totient is φ = 7907328.

The previous prime is 20970709. The next prime is 20970739. The reversal of 20970710 is 1707902.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20970710.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16166 + ... + 17414.

It is an arithmetic number, because the mean of its divisors is an integer number (1248750).

Almost surely, 2^20970710 is an apocalyptic number.

20970710 is a deficient number, since it is larger than the sum of its proper divisors (18989290).

20970710 is a wasteful number, since it uses less digits than its factorization.

20970710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 20970710 is about 4579.3787788302. The cubic root of 20970710 is about 275.7640898794.

The spelling of 20970710 in words is "twenty million, nine hundred seventy thousand, seven hundred ten".