12315572 has 24 divisors (see below), whose sum is σ = 22878240. Its totient is φ = 5784480.

The previous prime is 12315559. The next prime is 12315577. The reversal of 12315572 is 27551321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315577) 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, 9338 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (953260).

Almost surely, 2^12315572 is an apocalyptic number.

It is an amenable number.

12315572 is a deficient number, since it is larger than the sum of its proper divisors (10562668).

12315572 is a wasteful number, since it uses less digits than its factorization.

12315572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1389 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 12315572 is about 3509.3549264787. The cubic root of 12315572 is about 230.9323965264.

Adding to 12315572 its reverse (27551321), we get a palindrome (39866893).

The spelling of 12315572 in words is "twelve million, three hundred fifteen thousand, five hundred seventy-two".