22865290 has 64 divisors (see below), whose sum is σ = 49932288. Its totient is φ = 7372800.

The previous prime is 22865287. The next prime is 22865309. The reversal of 22865290 is 9256822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88842 + ... + 89098.

It is an arithmetic number, because the mean of its divisors is an integer number (780192).

Almost surely, 2^22865290 is an apocalyptic number.

22865290 is an abundant number, since it is smaller than the sum of its proper divisors (27066998).

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

22865290 is a wasteful number, since it uses less digits than its factorization.

22865290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343.

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

The square root of 22865290 is about 4781.7664100205. The cubic root of 22865290 is about 283.8303969820.

The spelling of 22865290 in words is "twenty-two million, eight hundred sixty-five thousand, two hundred ninety".