20698772 has 12 divisors (see below), whose sum is σ = 36733536. Its totient is φ = 10203480.

The previous prime is 20698763. The next prime is 20698787. The reversal of 20698772 is 27789602.

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, 36158 + ... + 36725.

It is an arithmetic number, because the mean of its divisors is an integer number (3061128).

Almost surely, 2^20698772 is an apocalyptic number.

It is an amenable number.

20698772 is a deficient number, since it is larger than the sum of its proper divisors (16034764).

20698772 is a wasteful number, since it uses less digits than its factorization.

20698772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72958 (or 72956 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 20698772 is about 4549.5903112258. The cubic root of 20698772 is about 274.5669083740.

The spelling of 20698772 in words is "twenty million, six hundred ninety-eight thousand, seven hundred seventy-two".