12239528868 has 96 divisors (see below), whose sum is σ = 36283403520. Its totient is φ = 3495260160.

The previous prime is 12239528863. The next prime is 12239528891. The reversal of 12239528868 is 86882593221.

It is a happy number.

12239528868 is a `hidden beast` number, since 1 + 2 + 2 + 39 + 528 + 86 + 8 = 666.

It is a super-2 number, since 2×12239528868² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (12239528863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2729188 + ... + 2733668.

It is an arithmetic number, because the mean of its divisors is an integer number (377952120).

Almost surely, 2^12239528868 is an apocalyptic number.

12239528868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12239528868 is an abundant number, since it is smaller than the sum of its proper divisors (24043874652).

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

12239528868 is a wasteful number, since it uses less digits than its factorization.

12239528868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8114 (or 8106 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 12239528868 in words is "twelve billion, two hundred thirty-nine million, five hundred twenty-eight thousand, eight hundred sixty-eight".