12315912 has 32 divisors (see below), whose sum is σ = 35188800. Its totient is φ = 3518784.

The previous prime is 12315883. The next prime is 12315929. The reversal of 12315912 is 21951321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36487 + ... + 36822.

It is an arithmetic number, because the mean of its divisors is an integer number (1099650).

Almost surely, 2^12315912 is an apocalyptic number.

12315912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12315912 is an abundant number, since it is smaller than the sum of its proper divisors (22872888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12315912 is a wasteful number, since it uses less digits than its factorization.

12315912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73325 (or 73321 counting only the distinct ones).

The product of its digits is 540, while the sum is 24.

The square root of 12315912 is about 3509.4033680955. The cubic root of 12315912 is about 230.9345216488.

The spelling of 12315912 in words is "twelve million, three hundred fifteen thousand, nine hundred twelve".