20698432 has 14 divisors (see below), whose sum is σ = 41073578. Its totient is φ = 10349184.

The previous prime is 20698397. The next prime is 20698453. The reversal of 20698432 is 23489602.

It can be written as a sum of positive squares in only one way, i.e., 20214016 + 484416 = 4496^2 + 696^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161643 + ... + 161770.

It is an arithmetic number, because the mean of its divisors is an integer number (2933827).

Almost surely, 2^20698432 is an apocalyptic number.

It is an amenable number.

20698432 is a deficient number, since it is larger than the sum of its proper divisors (20375146).

20698432 is an equidigital number, since it uses as much as digits as its factorization.

20698432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323425 (or 323415 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20698432 is about 4549.5529450705. The cubic root of 20698432 is about 274.5654050117.

It can be divided in two parts, 2069 and 8432, that added together give a palindrome (10501).

The spelling of 20698432 in words is "twenty million, six hundred ninety-eight thousand, four hundred thirty-two".