20964608 has 36 divisors (see below), whose sum is σ = 47829600. Its totient is φ = 8984064.

The previous prime is 20964599. The next prime is 20964611. The reversal of 20964608 is 80646902.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4058 + ... + 7641.

It is an arithmetic number, because the mean of its divisors is an integer number (1328600).

Almost surely, 2^20964608 is an apocalyptic number.

20964608 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20964608 is an abundant number, since it is smaller than the sum of its proper divisors (26864992).

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

20964608 is an equidigital number, since it uses as much as digits as its factorization.

20964608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11722 (or 11708 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 20964608 is about 4578.7124827838. The cubic root of 20964608 is about 275.7373402571.

The spelling of 20964608 in words is "twenty million, nine hundred sixty-four thousand, six hundred eight".