20698964 has 24 divisors (see below), whose sum is σ = 42557088. Its totient is φ = 8684640.

The previous prime is 20698949. The next prime is 20698981. The reversal of 20698964 is 46989602.

It is a super-2 number, since 2×20698964² = 856894221346592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 17522 + ... + 18665.

It is an arithmetic number, because the mean of its divisors is an integer number (1773212).

Almost surely, 2^20698964 is an apocalyptic number.

It is an amenable number.

20698964 is an abundant number, since it is smaller than the sum of its proper divisors (21858124).

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

20698964 is a wasteful number, since it uses less digits than its factorization.

20698964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36215 (or 36213 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 20698964 is about 4549.6114119780. The cubic root of 20698964 is about 274.5677573242.

The spelling of 20698964 in words is "twenty million, six hundred ninety-eight thousand, nine hundred sixty-four".