22641904 has 40 divisors (see below), whose sum is σ = 45711360. Its totient is φ = 10852800.

The previous prime is 22641893. The next prime is 22641907. The reversal of 22641904 is 40914622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22641907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94617 + ... + 94855.

It is an arithmetic number, because the mean of its divisors is an integer number (1142784).

Almost surely, 2^22641904 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 22641904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22855680).

22641904 is an abundant number, since it is smaller than the sum of its proper divisors (23069456).

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

22641904 is a wasteful number, since it uses less digits than its factorization.

22641904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 22641904 is about 4758.3509748651. The cubic root of 22641904 is about 282.9030621055.

The spelling of 22641904 in words is "twenty-two million, six hundred forty-one thousand, nine hundred four".