22008315904 has 135 divisors (see below), whose sum is σ = 47227830741. Its totient is φ = 10254090240.

The previous prime is 22008315853. The next prime is 22008315919. The reversal of 22008315904 is 40951380022.

The square root of 22008315904 is 148352.

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

It can be written as a sum of positive squares in only one way, i.e., 715669504 + 21292646400 = 26752^2 + 145920^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22008315904.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 360792034 + ... + 360792094.

Almost surely, 2^22008315904 is an apocalyptic number.

22008315904 is the 148352-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22008315904

22008315904 is an abundant number, since it is smaller than the sum of its proper divisors (25219514837).

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

22008315904 is an frugal number, since it uses more digits than its factorization.

22008315904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 22008315904 its reverse (40951380022), we get a palindrome (62959695926).

The spelling of 22008315904 in words is "twenty-two billion, eight million, three hundred fifteen thousand, nine hundred four".