20698042 has 16 divisors (see below), whose sum is σ = 31907232. Its totient is φ = 10066320.

The previous prime is 20698039. The next prime is 20698043. The reversal of 20698042 is 24089602.

It is a junction number, because it is equal to n+sod(n) for n = 20697995 and 20698013.

It is not an unprimeable number, because it can be changed into a prime (20698043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10192 + ... + 12052.

It is an arithmetic number, because the mean of its divisors is an integer number (1994202).

Almost surely, 2^20698042 is an apocalyptic number.

20698042 is a deficient number, since it is larger than the sum of its proper divisors (11209190).

20698042 is a wasteful number, since it uses less digits than its factorization.

20698042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20698042 is about 4549.5100835145. The cubic root of 20698042 is about 274.5636805464.

The spelling of 20698042 in words is "twenty million, six hundred ninety-eight thousand, forty-two".