12099888 has 80 divisors (see below), whose sum is σ = 35716960. Its totient is φ = 3919104.

The previous prime is 12099883. The next prime is 12099907. The reversal of 12099888 is 88899021.

It is a super-2 number, since 2×12099888² = 292814579225088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12099883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15606 + ... + 16362.

It is an arithmetic number, because the mean of its divisors is an integer number (446462).

Almost surely, 2^12099888 is an apocalyptic number.

12099888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12099888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17858480).

12099888 is an abundant number, since it is smaller than the sum of its proper divisors (23617072).

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

12099888 is a wasteful number, since it uses less digits than its factorization.

12099888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 12099888 is about 3478.4893272799. The cubic root of 12099888 is about 229.5763341275.

The spelling of 12099888 in words is "twelve million, ninety-nine thousand, eight hundred eighty-eight".