22372665 has 48 divisors (see below), whose sum is σ = 42408000. Its totient is φ = 10039680.

The previous prime is 22372643. The next prime is 22372667. The reversal of 22372665 is 56627322.

It is a happy number.

It is not a de Polignac number, because 22372665 - 2²⁰ = 21324089 is a prime.

It is a super-2 number, since 2×22372665² = 1001072278404450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22372667) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44586 + ... + 45084.

It is an arithmetic number, because the mean of its divisors is an integer number (883500).

Almost surely, 2^22372665 is an apocalyptic number.

It is an amenable number.

22372665 is a deficient number, since it is larger than the sum of its proper divisors (20035335).

22372665 is a wasteful number, since it uses less digits than its factorization.

22372665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 575 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 22372665 is about 4729.9751584971. The cubic root of 22372665 is about 281.7772371853. Note that the first 3 decimals are identical.

Adding to 22372665 its reverse (56627322), we get a palindrome (78999987).

The spelling of 22372665 in words is "twenty-two million, three hundred seventy-two thousand, six hundred sixty-five".