13868172 has 60 divisors (see below), whose sum is σ = 37850736. Its totient is φ = 4419360.

The previous prime is 13868171. The next prime is 13868189. The reversal of 13868172 is 27186831.

13868172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13868171) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6522 + ... + 8382.

Almost surely, 2^13868172 is an apocalyptic number.

13868172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13868172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18925368).

13868172 is an abundant number, since it is smaller than the sum of its proper divisors (23982564).

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

13868172 is a wasteful number, since it uses less digits than its factorization.

13868172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900 (or 1889 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 13868172 is about 3723.9994629430. Note that the first 3 decimals coincide. The cubic root of 13868172 is about 240.2553532150.

The spelling of 13868172 in words is "thirteen million, eight hundred sixty-eight thousand, one hundred seventy-two".