22772156 has 12 divisors (see below), whose sum is σ = 43474200. Its totient is φ = 10350960.

The previous prime is 22772149. The next prime is 22772173. The reversal of 22772156 is 65127722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258731 + ... + 258818.

It is an arithmetic number, because the mean of its divisors is an integer number (3622850).

Almost surely, 2^22772156 is an apocalyptic number.

It is an amenable number.

22772156 is a deficient number, since it is larger than the sum of its proper divisors (20702044).

22772156 is a wasteful number, since it uses less digits than its factorization.

22772156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517564 (or 517562 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 22772156 is about 4772.0180217598. The cubic root of 22772156 is about 283.4445103104. Note that the first 3 decimals are identical.

Adding to 22772156 its reverse (65127722), we get a palindrome (87899878).

The spelling of 22772156 in words is "twenty-two million, seven hundred seventy-two thousand, one hundred fifty-six".