13205992 has 16 divisors (see below), whose sum is σ = 25101540. Its totient is φ = 6512256.

The previous prime is 13205989. The next prime is 13206001. The reversal of 13205992 is 29950231.

It can be written as a sum of positive squares in 2 ways, for example, as 13205956 + 36 = 3634^2 + 6^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10723 + ... + 11890.

Almost surely, 2^13205992 is an apocalyptic number.

It is an amenable number.

13205992 is a deficient number, since it is larger than the sum of its proper divisors (11895548).

13205992 is a wasteful number, since it uses less digits than its factorization.

13205992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22692 (or 22688 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13205992 is about 3634.0049532162. The cubic root of 13205992 is about 236.3689049928.

The spelling of 13205992 in words is "thirteen million, two hundred five thousand, nine hundred ninety-two".