22872156 has 12 divisors (see below), whose sum is σ = 53368392. Its totient is φ = 7624048.

The previous prime is 22872151. The next prime is 22872163. The reversal of 22872156 is 65127822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22872151) 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, 952995 + ... + 953018.

It is an arithmetic number, because the mean of its divisors is an integer number (4447366).

Almost surely, 2^22872156 is an apocalyptic number.

It is an amenable number.

22872156 is an abundant number, since it is smaller than the sum of its proper divisors (30496236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22872156 is a wasteful number, since it uses less digits than its factorization.

22872156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906020 (or 1906018 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 22872156 is about 4782.4842916627. The cubic root of 22872156 is about 283.8588037138.

Adding to 22872156 its reverse (65127822), we get a palindrome (87999978).

The spelling of 22872156 in words is "twenty-two million, eight hundred seventy-two thousand, one hundred fifty-six".