12115928 has 32 divisors (see below), whose sum is σ = 24995520. Its totient is φ = 5460000.

The previous prime is 12115921. The next prime is 12115933. The reversal of 12115928 is 82951121.

It is a super-2 number, since 2×12115928² = 293591422602368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12115928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115921) 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, 11003 + ... + 12053.

It is an arithmetic number, because the mean of its divisors is an integer number (781110).

Almost surely, 2^12115928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12115928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12497760).

12115928 is an abundant number, since it is smaller than the sum of its proper divisors (12879592).

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

12115928 is a wasteful number, since it uses less digits than its factorization.

12115928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1195 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 12115928 is about 3480.7941622567. The cubic root of 12115928 is about 229.6777339208.

The spelling of 12115928 in words is "twelve million, one hundred fifteen thousand, nine hundred twenty-eight".