22790156 has 24 divisors (see below), whose sum is σ = 40619040. Its totient is φ = 11187072.

The previous prime is 22790147. The next prime is 22790167. The reversal of 22790156 is 65109722.

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, 72656 + ... + 72968.

It is an arithmetic number, because the mean of its divisors is an integer number (1692460).

Almost surely, 2^22790156 is an apocalyptic number.

It is an amenable number.

22790156 is a deficient number, since it is larger than the sum of its proper divisors (17828884).

22790156 is a wasteful number, since it uses less digits than its factorization.

22790156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 22790156 is about 4773.9036437699. The cubic root of 22790156 is about 283.5191725061.

Adding to 22790156 its reverse (65109722), we get a palindrome (87899878).

The spelling of 22790156 in words is "twenty-two million, seven hundred ninety thousand, one hundred fifty-six".