12387984 has 120 divisors (see below), whose sum is σ = 39015360. Its totient is φ = 3370752.

The previous prime is 12387979. The next prime is 12388031. The reversal of 12387984 is 48978321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53982 + ... + 54210.

It is an arithmetic number, because the mean of its divisors is an integer number (325128).

Almost surely, 2^12387984 is an apocalyptic number.

12387984 is a gapful number since it is divisible by the number (14) 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 12387984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19507680).

12387984 is an abundant number, since it is smaller than the sum of its proper divisors (26627376).

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

12387984 is a wasteful number, since it uses less digits than its factorization.

12387984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 264 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 12387984 is about 3519.6568014510. The cubic root of 12387984 is about 231.3841175748.

The spelling of 12387984 in words is "twelve million, three hundred eighty-seven thousand, nine hundred eighty-four".