13731992 has 8 divisors (see below), whose sum is σ = 25747500. Its totient is φ = 6865992.

The previous prime is 13731983. The next prime is 13732001. The reversal of 13731992 is 29913731.

It is an interprime number because it is at equal distance from previous prime (13731983) and next prime (13732001).

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858242 + ... + 858257.

Almost surely, 2^13731992 is an apocalyptic number.

It is an amenable number.

13731992 is a deficient number, since it is larger than the sum of its proper divisors (12015508).

13731992 is a wasteful number, since it uses less digits than its factorization.

13731992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716505 (or 1716501 counting only the distinct ones).

The product of its digits is 10206, while the sum is 35.

The square root of 13731992 is about 3705.6702497659. The cubic root of 13731992 is about 239.4663606300.

The spelling of 13731992 in words is "thirteen million, seven hundred thirty-one thousand, nine hundred ninety-two".