13987532 has 24 divisors (see below), whose sum is σ = 27913536. Its totient is φ = 6075648.

The previous prime is 13987531. The next prime is 13987537. The reversal of 13987532 is 23578931.

It is not an unprimeable number, because it can be changed into a prime (13987531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7028 + ... + 8795.

It is an arithmetic number, because the mean of its divisors is an integer number (1163064).

Almost surely, 2^13987532 is an apocalyptic number.

It is an amenable number.

13987532 is a deficient number, since it is larger than the sum of its proper divisors (13926004).

13987532 is a wasteful number, since it uses less digits than its factorization.

13987532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15857 (or 15855 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 13987532 is about 3739.9909090799. The cubic root of 13987532 is about 240.9426583732.

The spelling of 13987532 in words is "thirteen million, nine hundred eighty-seven thousand, five hundred thirty-two".