13533992 has 16 divisors (see below), whose sum is σ = 25967040. Its totient is φ = 6609456.

The previous prime is 13533991. The next prime is 13533997. The reversal of 13533992 is 29933531.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13533991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19328 + ... + 20015.

It is an arithmetic number, because the mean of its divisors is an integer number (1622940).

Almost surely, 2^13533992 is an apocalyptic number.

It is an amenable number.

13533992 is a deficient number, since it is larger than the sum of its proper divisors (12433048).

13533992 is a wasteful number, since it uses less digits than its factorization.

13533992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39392 (or 39388 counting only the distinct ones).

The product of its digits is 21870, while the sum is 35.

The square root of 13533992 is about 3678.8574313229. The cubic root of 13533992 is about 238.3098382086.

The spelling of 13533992 in words is "thirteen million, five hundred thirty-three thousand, nine hundred ninety-two".