22239290 has 16 divisors (see below), whose sum is σ = 40538880. Its totient is φ = 8782800.

The previous prime is 22239251. The next prime is 22239337. The reversal of 22239290 is 9293222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13286 + ... + 14865.

It is an arithmetic number, because the mean of its divisors is an integer number (2533680).

Almost surely, 2^22239290 is an apocalyptic number.

22239290 is a deficient number, since it is larger than the sum of its proper divisors (18299590).

22239290 is a wasteful number, since it uses less digits than its factorization.

22239290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28237.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 22239290 is about 4715.8551716523. The cubic root of 22239290 is about 281.2161809542.

The spelling of 22239290 in words is "twenty-two million, two hundred thirty-nine thousand, two hundred ninety".