13631992 has 32 divisors (see below), whose sum is σ = 28188720. Its totient is φ = 6128640.

The previous prime is 13631983. The next prime is 13631993. The reversal of 13631992 is 29913631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13631993) 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, 7738 + ... + 9334.

Almost surely, 2^13631992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13631992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14094360).

13631992 is an abundant number, since it is smaller than the sum of its proper divisors (14556728).

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

13631992 is a wasteful number, since it uses less digits than its factorization.

13631992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711 (or 1707 counting only the distinct ones).

The product of its digits is 8748, while the sum is 34.

The square root of 13631992 is about 3692.1527595700. The cubic root of 13631992 is about 238.8836580631.

The spelling of 13631992 in words is "thirteen million, six hundred thirty-one thousand, nine hundred ninety-two".