20698224 has 20 divisors (see below), whose sum is σ = 53470536. Its totient is φ = 6899392.

The previous prime is 20698219. The next prime is 20698241. The reversal of 20698224 is 42289602.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 215559 + ... + 215654.

Almost surely, 2^20698224 is an apocalyptic number.

20698224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20698224 is an abundant number, since it is smaller than the sum of its proper divisors (32772312).

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

20698224 is a wasteful number, since it uses less digits than its factorization.

20698224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431224 (or 431218 counting only the distinct ones).

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

The square root of 20698224 is about 4549.5300856242. The cubic root of 20698224 is about 274.5644852996.

The spelling of 20698224 in words is "twenty million, six hundred ninety-eight thousand, two hundred twenty-four".