20698038 has 16 divisors (see below), whose sum is σ = 45995760. Its totient is φ = 6899328.

The previous prime is 20698019. The next prime is 20698039. The reversal of 20698038 is 83089602.

It is a junction number, because it is equal to n+sod(n) for n = 20697993 and 20698011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20698039) 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, 191595 + ... + 191702.

It is an arithmetic number, because the mean of its divisors is an integer number (2874735).

Almost surely, 2^20698038 is an apocalyptic number.

20698038 is an abundant number, since it is smaller than the sum of its proper divisors (25297722).

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

20698038 is a wasteful number, since it uses less digits than its factorization.

20698038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383308 (or 383302 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20698038 is about 4549.5096439067. The cubic root of 20698038 is about 274.5636628595.

The spelling of 20698038 in words is "twenty million, six hundred ninety-eight thousand, thirty-eight".