22115290 has 16 divisors (see below), whose sum is σ = 39866112. Its totient is φ = 8833104.

The previous prime is 22115281. The next prime is 22115299. The reversal of 22115290 is 9251122.

It is an interprime number because it is at equal distance from previous prime (22115281) and next prime (22115299).

It is not an unprimeable number, because it can be changed into a prime (22115299) 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, 8527 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (2491632).

Almost surely, 2^22115290 is an apocalyptic number.

22115290 is a deficient number, since it is larger than the sum of its proper divisors (17750822).

22115290 is a wasteful number, since it uses less digits than its factorization.

22115290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 22115290 is about 4702.6896559310. The cubic root of 22115290 is about 280.6925458641.

The spelling of 22115290 in words is "twenty-two million, one hundred fifteen thousand, two hundred ninety".