12088809828 has 36 divisors (see below), whose sum is σ = 30562166908. Its totient is φ = 4029030720.

The previous prime is 12088809787. The next prime is 12088809851. The reversal of 12088809828 is 82890888021.

It can be written as a sum of positive squares in 2 ways, for example, as 5039864064 + 7048945764 = 70992^2 + 83958^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12088809828² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289350 + ... + 328482.

Almost surely, 2^12088809828 is an apocalyptic number.

12088809828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12088809828 is an abundant number, since it is smaller than the sum of its proper divisors (18473357080).

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

12088809828 is a wasteful number, since it uses less digits than its factorization.

12088809828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47724 (or 47719 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 54.

The spelling of 12088809828 in words is "twelve billion, eighty-eight million, eight hundred nine thousand, eight hundred twenty-eight".