13078172 has 12 divisors (see below), whose sum is σ = 22962576. Its totient is φ = 6517440.

The previous prime is 13078171. The next prime is 13078181. The reversal of 13078172 is 27187031.

It is a super-3 number, since 3×13078172³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13078171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4013 + ... + 6500.

It is an arithmetic number, because the mean of its divisors is an integer number (1913548).

Almost surely, 2^13078172 is an apocalyptic number.

It is an amenable number.

13078172 is a deficient number, since it is larger than the sum of its proper divisors (9884404).

13078172 is a wasteful number, since it uses less digits than its factorization.

13078172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10828 (or 10826 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 13078172 is about 3616.3755335971. The cubic root of 13078172 is about 235.6038311654.

The spelling of 13078172 in words is "thirteen million, seventy-eight thousand, one hundred seventy-two".