13188285 has 64 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 6258240.

The previous prime is 13188283. The next prime is 13188323. The reversal of 13188285 is 58288131.

It is not a de Polignac number, because 13188285 - 2¹ = 13188283 is a prime.

It is a super-2 number, since 2×13188285² = 347861722482450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13188281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123202 + ... + 123308.

It is an arithmetic number, because the mean of its divisors is an integer number (408240).

Almost surely, 2^13188285 is an apocalyptic number.

13188285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13188285 is a deficient number, since it is larger than the sum of its proper divisors (12939075).

13188285 is a wasteful number, since it uses less digits than its factorization.

13188285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 13188285 is about 3631.5678432325. The cubic root of 13188285 is about 236.2632141765.

The spelling of 13188285 in words is "thirteen million, one hundred eighty-eight thousand, two hundred eighty-five".