13275864 has 144 divisors (see below), whose sum is σ = 43215120. Its totient is φ = 3669120.

The previous prime is 13275833. The next prime is 13275869. The reversal of 13275864 is 46857231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13275869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 186949 + ... + 187019.

It is an arithmetic number, because the mean of its divisors is an integer number (300105).

Almost surely, 2^13275864 is an apocalyptic number.

13275864 is a gapful number since it is divisible by the number (14) 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 13275864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21607560).

13275864 is an abundant number, since it is smaller than the sum of its proper divisors (29939256).

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

13275864 is a wasteful number, since it uses less digits than its factorization.

13275864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 136 counting only the distinct ones).

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

The square root of 13275864 is about 3643.6059062418. The cubic root of 13275864 is about 236.7850425024.

The spelling of 13275864 in words is "thirteen million, two hundred seventy-five thousand, eight hundred sixty-four".