22372945 has 16 divisors (see below), whose sum is σ = 30781440. Its totient is φ = 15292224.

The previous prime is 22372919. The next prime is 22372957. The reversal of 22372945 is 54927322.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22372945 - 2⁷ = 22372817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22372945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12571 + ... + 14239.

It is an arithmetic number, because the mean of its divisors is an integer number (1923840).

Almost surely, 2^22372945 is an apocalyptic number.

It is an amenable number.

22372945 is a deficient number, since it is larger than the sum of its proper divisors (8408495).

22372945 is a wasteful number, since it uses less digits than its factorization.

22372945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064.

The product of its digits is 30240, while the sum is 34.

The square root of 22372945 is about 4730.0047568686. The cubic root of 22372945 is about 281.7784126867.

The spelling of 22372945 in words is "twenty-two million, three hundred seventy-two thousand, nine hundred forty-five".