13987692 has 36 divisors (see below), whose sum is σ = 35717136. Its totient is φ = 4615200.

The previous prime is 13987681. The next prime is 13987723. The reversal of 13987692 is 29678931.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1713 + ... + 5559.

Almost surely, 2^13987692 is an apocalyptic number.

13987692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13987692 is an abundant number, since it is smaller than the sum of its proper divisors (21729444).

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

13987692 is a wasteful number, since it uses less digits than its factorization.

13987692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3958 (or 3953 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 13987692 is about 3740.0122994450. The cubic root of 13987692 is about 240.9435770646.

The spelling of 13987692 in words is "thirteen million, nine hundred eighty-seven thousand, six hundred ninety-two".