13173885 has 12 divisors (see below), whose sum is σ = 22834812. Its totient is φ = 7026048.

The previous prime is 13173883. The next prime is 13173889. The reversal of 13173885 is 58837131.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 6610041 = 2562^2 + 2571^2 .

It is not a de Polignac number, because 13173885 - 2¹ = 13173883 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13173883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146332 + ... + 146421.

It is an arithmetic number, because the mean of its divisors is an integer number (1902901).

Almost surely, 2^13173885 is an apocalyptic number.

13173885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13173885 is a deficient number, since it is larger than the sum of its proper divisors (9660927).

13173885 is a wasteful number, since it uses less digits than its factorization.

13173885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292764 (or 292761 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 13173885 is about 3629.5846869856. The cubic root of 13173885 is about 236.1771926482.

The spelling of 13173885 in words is "thirteen million, one hundred seventy-three thousand, eight hundred eighty-five".