22372664 has 8 divisors (see below), whose sum is σ = 41948760. Its totient is φ = 11186328.

The previous prime is 22372643. The next prime is 22372667. The reversal of 22372664 is 46627322.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 22372664.

It is a congruent number.

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

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 as a sum of consecutive naturals, namely, 1398284 + ... + 1398299.

It is an arithmetic number, because the mean of its divisors is an integer number (5243595).

Almost surely, 2^22372664 is an apocalyptic number.

It is an amenable number.

22372664 is a deficient number, since it is larger than the sum of its proper divisors (19576096).

22372664 is a wasteful number, since it uses less digits than its factorization.

22372664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796589 (or 2796585 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 22372664 is about 4729.9750527883. The cubic root of 22372664 is about 281.7772329870. Note that the first 3 decimals are identical.

Adding to 22372664 its reverse (46627322), we get a palindrome (68999986).

The spelling of 22372664 in words is "twenty-two million, three hundred seventy-two thousand, six hundred sixty-four".