12388880 has 40 divisors (see below), whose sum is σ = 32920512. Its totient is φ = 4247424.

The previous prime is 12388877. The next prime is 12388897. The reversal of 12388880 is 8888321.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10502 + ... + 11621.

Almost surely, 2^12388880 is an apocalyptic number.

12388880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12388880 is an abundant number, since it is smaller than the sum of its proper divisors (20531632).

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

12388880 is a wasteful number, since it uses less digits than its factorization.

12388880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22143 (or 22137 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 38.

The square root of 12388880 is about 3519.7840842870. The cubic root of 12388880 is about 231.3896959689.

The spelling of 12388880 in words is "twelve million, three hundred eighty-eight thousand, eight hundred eighty".