22490132904 has 24 divisors (see below), whose sum is σ = 60910776810. Its totient is φ = 7496710944.

The previous prime is 22490132893. The next prime is 22490132909. The reversal of 22490132904 is 40923109422.

It can be written as a sum of positive squares in only one way, i.e., 13710068100 + 8780064804 = 117090^2 + 93702^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is not an unprimeable number, because it can be changed into a prime (22490132909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156181407 + ... + 156181550.

Almost surely, 2^22490132904 is an apocalyptic number.

22490132904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22490132904 is an abundant number, since it is smaller than the sum of its proper divisors (38420643906).

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

22490132904 is a wasteful number, since it uses less digits than its factorization.

22490132904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312362969 (or 312362962 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 22490132904 in words is "twenty-two billion, four hundred ninety million, one hundred thirty-two thousand, nine hundred four".