22920772 has 24 divisors (see below), whose sum is σ = 46819584. Its totient is φ = 9613632.

The previous prime is 22920761. The next prime is 22920773. The reversal of 22920772 is 27702922.

It is not an unprimeable number, because it can be changed into a prime (22920773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7393 + ... + 10024.

It is an arithmetic number, because the mean of its divisors is an integer number (1950816).

Almost surely, 2^22920772 is an apocalyptic number.

It is an amenable number.

22920772 is an abundant number, since it is smaller than the sum of its proper divisors (23898812).

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

22920772 is a wasteful number, since it uses less digits than its factorization.

22920772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17475 (or 17473 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 22920772 is about 4787.5643076621. The cubic root of 22920772 is about 284.0597804461.

The spelling of 22920772 in words is "twenty-two million, nine hundred twenty thousand, seven hundred seventy-two".