13887612 has 30 divisors (see below), whose sum is σ = 36305808. Its totient is φ = 4629096.

The previous prime is 13887611. The next prime is 13887641. The reversal of 13887612 is 21678831.

13887612 is a `hidden beast` number, since 1 + 38 + 8 + 7 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13887611) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21108 + ... + 21755.

Almost surely, 2^13887612 is an apocalyptic number.

13887612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13887612 is an abundant number, since it is smaller than the sum of its proper divisors (22418196).

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

13887612 is a wasteful number, since it uses less digits than its factorization.

13887612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42879 (or 42868 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 13887612 is about 3726.6086459407. The cubic root of 13887612 is about 240.3675617890.

The spelling of 13887612 in words is "thirteen million, eight hundred eighty-seven thousand, six hundred twelve".