13861272 has 32 divisors (see below), whose sum is σ = 36161280. Its totient is φ = 4419360.

The previous prime is 13861229. The next prime is 13861303. The reversal of 13861272 is 27216831.

It is a super-2 number, since 2×13861272² = 384269722915968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12004 + ... + 13107.

It is an arithmetic number, because the mean of its divisors is an integer number (1130040).

Almost surely, 2^13861272 is an apocalyptic number.

13861272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13861272 is an abundant number, since it is smaller than the sum of its proper divisors (22300008).

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

13861272 is a wasteful number, since it uses less digits than its factorization.

13861272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25143 (or 25139 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 13861272 is about 3723.0729243462. The cubic root of 13861272 is about 240.2155008839.

The spelling of 13861272 in words is "thirteen million, eight hundred sixty-one thousand, two hundred seventy-two".