12987104 has 24 divisors (see below), whose sum is σ = 27536040. Its totient is φ = 5993856.

The previous prime is 12987103. The next prime is 12987137. The reversal of 12987104 is 40178921.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15194 + ... + 16025.

It is an arithmetic number, because the mean of its divisors is an integer number (1147335).

Almost surely, 2^12987104 is an apocalyptic number.

It is an amenable number.

12987104 is an abundant number, since it is smaller than the sum of its proper divisors (14548936).

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

12987104 is a wasteful number, since it uses less digits than its factorization.

12987104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31242 (or 31234 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12987104 is about 3603.7624782996. The cubic root of 12987104 is about 235.0556922480.

The spelling of 12987104 in words is "twelve million, nine hundred eighty-seven thousand, one hundred four".