20256708 has 24 divisors (see below), whose sum is σ = 47447680. Its totient is φ = 6726240.

The previous prime is 20256689. The next prime is 20256737. The reversal of 20256708 is 80765202.

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, 138 + ... + 6366.

Almost surely, 2^20256708 is an apocalyptic number.

It is an amenable number.

20256708 is an abundant number, since it is smaller than the sum of its proper divisors (27190972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20256708 is a wasteful number, since it uses less digits than its factorization.

20256708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6507 (or 6505 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 20256708 is about 4500.7452716189. The cubic root of 20256708 is about 272.5981825032.

The spelling of 20256708 in words is "twenty million, two hundred fifty-six thousand, seven hundred eight".