13133985 has 16 divisors (see below), whose sum is σ = 21102336. Its totient is φ = 6975488.

The previous prime is 13133969. The next prime is 13134007. The reversal of 13133985 is 58933131.

It is a cyclic number.

It is not a de Polignac number, because 13133985 - 2⁴ = 13133969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2152 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (1318896).

Almost surely, 2^13133985 is an apocalyptic number.

13133985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13133985 is a deficient number, since it is larger than the sum of its proper divisors (7968351).

13133985 is a wasteful number, since it uses less digits than its factorization.

13133985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672.

The product of its digits is 9720, while the sum is 33.

The square root of 13133985 is about 3624.0840222048. The cubic root of 13133985 is about 235.9385133796.

The spelling of 13133985 in words is "thirteen million, one hundred thirty-three thousand, nine hundred eighty-five".