13865472 has 160 divisors (see below), whose sum is σ = 44193600. Its totient is φ = 4276224.

The previous prime is 13865419. The next prime is 13865473. The reversal of 13865472 is 27456831.

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 (13865473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234979 + ... + 235037.

It is an arithmetic number, because the mean of its divisors is an integer number (276210).

Almost surely, 2^13865472 is an apocalyptic number.

13865472 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 13865472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22096800).

13865472 is an abundant number, since it is smaller than the sum of its proper divisors (30328128).

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

13865472 is an equidigital number, since it uses as much as digits as its factorization.

13865472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 81 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 13865472 is about 3723.6369318181. The cubic root of 13865472 is about 240.2397603992.

The spelling of 13865472 in words is "thirteen million, eight hundred sixty-five thousand, four hundred seventy-two".