12981624 has 16 divisors (see below), whose sum is σ = 32454120. Its totient is φ = 4327200.

The previous prime is 12981623. The next prime is 12981643. The reversal of 12981624 is 42618921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270427 + ... + 270474.

Almost surely, 2^12981624 is an apocalyptic number.

It is an amenable number.

12981624 is an abundant number, since it is smaller than the sum of its proper divisors (19472496).

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

12981624 is a wasteful number, since it uses less digits than its factorization.

12981624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540910 (or 540906 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 12981624 is about 3603.0020815981. The cubic root of 12981624 is about 235.0226264618.

The spelling of 12981624 in words is "twelve million, nine hundred eighty-one thousand, six hundred twenty-four".