13666992 has 20 divisors (see below), whose sum is σ = 35306520. Its totient is φ = 4555648.

The previous prime is 13666979. The next prime is 13666999. The reversal of 13666992 is 29966631.

It is not an unprimeable number, because it can be changed into a prime (13666999) 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, 142317 + ... + 142412.

It is an arithmetic number, because the mean of its divisors is an integer number (1765326).

Almost surely, 2^13666992 is an apocalyptic number.

13666992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13666992 is an abundant number, since it is smaller than the sum of its proper divisors (21639528).

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

13666992 is a wasteful number, since it uses less digits than its factorization.

13666992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284740 (or 284734 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 13666992 is about 3696.8895033528. The cubic root of 13666992 is about 239.0879271258.

The spelling of 13666992 in words is "thirteen million, six hundred sixty-six thousand, nine hundred ninety-two".