23117572 has 12 divisors (see below), whose sum is σ = 40910940. Its totient is φ = 11428736.

The previous prime is 23117551. The next prime is 23117573. The reversal of 23117572 is 27571132.

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 10329796 = 3576^2 + 3214^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23117572.

It is not an unprimeable number, because it can be changed into a prime (23117573) 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 in 3 ways as a sum of consecutive naturals, for example, 32113 + ... + 32824.

It is an arithmetic number, because the mean of its divisors is an integer number (3409245).

Almost surely, 2^23117572 is an apocalyptic number.

It is an amenable number.

23117572 is a deficient number, since it is larger than the sum of its proper divisors (17793368).

23117572 is a wasteful number, since it uses less digits than its factorization.

23117572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65030 (or 65028 counting only the distinct ones).

The product of its digits is 2940, while the sum is 28.

The square root of 23117572 is about 4808.0736267241. The cubic root of 23117572 is about 284.8704530757.

The spelling of 23117572 in words is "twenty-three million, one hundred seventeen thousand, five hundred seventy-two".