22956021 has 32 divisors (see below), whose sum is σ = 38121600. Its totient is φ = 13530240.

The previous prime is 22956019. The next prime is 22956029. The reversal of 22956021 is 12065922.

It is not a de Polignac number, because 22956021 - 2¹ = 22956019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22956029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9945 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (1191300).

Almost surely, 2^22956021 is an apocalyptic number.

It is an amenable number.

22956021 is a deficient number, since it is larger than the sum of its proper divisors (15165579).

22956021 is a wasteful number, since it uses less digits than its factorization.

22956021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 22956021 is about 4791.2442016662. The cubic root of 22956021 is about 284.2053208436.

The spelling of 22956021 in words is "twenty-two million, nine hundred fifty-six thousand, twenty-one".