22156156 has 12 divisors (see below), whose sum is σ = 42298200. Its totient is φ = 10070960.

The previous prime is 22156139. The next prime is 22156159. The reversal of 22156156 is 65165122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251731 + ... + 251818.

It is an arithmetic number, because the mean of its divisors is an integer number (3524850).

Almost surely, 2^22156156 is an apocalyptic number.

It is an amenable number.

22156156 is a deficient number, since it is larger than the sum of its proper divisors (20142044).

22156156 is a wasteful number, since it uses less digits than its factorization.

22156156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503564 (or 503562 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 22156156 is about 4707.0326108919. The cubic root of 22156156 is about 280.8653331582.

The spelling of 22156156 in words is "twenty-two million, one hundred fifty-six thousand, one hundred fifty-six".