20698062400 has 84 divisors (see below), whose sum is σ = 51134070960. Its totient is φ = 8246080000.

The previous prime is 20698062397. The next prime is 20698062401. The reversal of 20698062400 is 426089602.

It is a super-2 number, since 2×20698062400² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20698062400.

It is not an unprimeable number, because it can be changed into a prime (20698062401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 375831 + ... + 427369.

It is an arithmetic number, because the mean of its divisors is an integer number (608738940).

Almost surely, 2^20698062400 is an apocalyptic number.

20698062400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20698062400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25567035480).

20698062400 is an abundant number, since it is smaller than the sum of its proper divisors (30436008560).

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

20698062400 is a wasteful number, since it uses less digits than its factorization.

20698062400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51812 (or 51797 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 20698062400 in words is "twenty billion, six hundred ninety-eight million, sixty-two thousand, four hundred".