22694490 has 192 divisors, whose sum is σ = 77366016. Its totient is φ = 4478976.

The previous prime is 22694479. The next prime is 22694509. The reversal of 22694490 is 9449622.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 139149 + ... + 139311.

It is an arithmetic number, because the mean of its divisors is an integer number (402948).

Almost surely, 2^22694490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22694490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38683008).

22694490 is an abundant number, since it is smaller than the sum of its proper divisors (54671526).

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

22694490 is a wasteful number, since it uses less digits than its factorization.

22694490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 210 counting only the distinct ones).

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

The square root of 22694490 is about 4763.8734240112. The cubic root of 22694490 is about 283.1219076311.

The spelling of 22694490 in words is "twenty-two million, six hundred ninety-four thousand, four hundred ninety".