20698001424 has 135 divisors (see below), whose sum is σ = 61231873599. Its totient is φ = 6525852480.

The previous prime is 20698001411. The next prime is 20698001473. The reversal of 20698001424 is 42410089602.

The square root of 20698001424 is 143868.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 26 ways as a sum of consecutive naturals, for example, 32801589 + ... + 32802219.

Almost surely, 2^20698001424 is an apocalyptic number.

20698001424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

20698001424 is the 143868-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20698001424

20698001424 is an abundant number, since it is smaller than the sum of its proper divisors (40533872175).

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

20698001424 is an equidigital number, since it uses as much as digits as its factorization.

20698001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Multiplying 20698001424 by its sum of digits (36), we get a square (745128051264 = 863208²).

20698001424 divided by its sum of digits (36) gives a square (574944484 = 23978²).

The spelling of 20698001424 in words is "twenty billion, six hundred ninety-eight million, one thousand, four hundred twenty-four".