22691156 has 12 divisors (see below), whose sum is σ = 41436192. Its totient is φ = 10852248.

The previous prime is 22691131. The next prime is 22691159. The reversal of 22691156 is 65119622.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22691159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123230 + ... + 123413.

It is an arithmetic number, because the mean of its divisors is an integer number (3453016).

Almost surely, 2^22691156 is an apocalyptic number.

It is an amenable number.

22691156 is a deficient number, since it is larger than the sum of its proper divisors (18745036).

22691156 is a wasteful number, since it uses less digits than its factorization.

22691156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246670 (or 246668 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 22691156 is about 4763.5234858243. The cubic root of 22691156 is about 283.1080426699.

The spelling of 22691156 in words is "twenty-two million, six hundred ninety-one thousand, one hundred fifty-six".