20698404 has 24 divisors (see below), whose sum is σ = 48380640. Its totient is φ = 6887424.

The previous prime is 20698397. The next prime is 20698453. The reversal of 20698404 is 40489602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8107 + ... + 10349.

It is an arithmetic number, because the mean of its divisors is an integer number (2015860).

Almost surely, 2^20698404 is an apocalyptic number.

It is an amenable number.

20698404 is an abundant number, since it is smaller than the sum of its proper divisors (27682236).

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

20698404 is a wasteful number, since it uses less digits than its factorization.

20698404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019 (or 3017 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 20698404 is about 4549.5498678441. The cubic root of 20698404 is about 274.5652812046.

The spelling of 20698404 in words is "twenty million, six hundred ninety-eight thousand, four hundred four".