13731536 has 40 divisors (see below), whose sum is σ = 32747904. Its totient is φ = 5431680.

The previous prime is 13731517. The next prime is 13731569. The reversal of 13731536 is 63513731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13731499 and 13731508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3260 + ... + 6171.

Almost surely, 2^13731536 is an apocalyptic number.

13731536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13731536 is an abundant number, since it is smaller than the sum of its proper divisors (19016368).

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

13731536 is a wasteful number, since it uses less digits than its factorization.

13731536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9459 (or 9453 counting only the distinct ones).

The product of its digits is 5670, while the sum is 29.

The square root of 13731536 is about 3705.6087219241. The cubic root of 13731536 is about 239.4637099374.

The spelling of 13731536 in words is "thirteen million, seven hundred thirty-one thousand, five hundred thirty-six".