22909404 has 96 divisors (see below), whose sum is σ = 65995776. Its totient is φ = 6036480.

The previous prime is 22909399. The next prime is 22909417. The reversal of 22909404 is 40490922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86977 + ... + 87239.

It is an arithmetic number, because the mean of its divisors is an integer number (687456).

Almost surely, 2^22909404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22909404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32997888).

22909404 is an abundant number, since it is smaller than the sum of its proper divisors (43086372).

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

22909404 is a wasteful number, since it uses less digits than its factorization.

22909404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 22909404 is about 4786.3769178785. The cubic root of 22909404 is about 284.0128110335.

The spelling of 22909404 in words is "twenty-two million, nine hundred nine thousand, four hundred four".