13286240 has 48 divisors (see below), whose sum is σ = 34246800. Its totient is φ = 4830720.

The previous prime is 13286239. The next prime is 13286257. The reversal of 13286240 is 4268231.

13286240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2015 + ... + 5534.

It is an arithmetic number, because the mean of its divisors is an integer number (713475).

Almost surely, 2^13286240 is an apocalyptic number.

13286240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13286240 is an abundant number, since it is smaller than the sum of its proper divisors (20960560).

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

13286240 is a wasteful number, since it uses less digits than its factorization.

13286240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7575 (or 7567 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 13286240 is about 3645.0294923361. The cubic root of 13286240 is about 236.8467143656.

Subtracting from 13286240 its reverse (4268231), we obtain a square (9018009 = 3003²).

The spelling of 13286240 in words is "thirteen million, two hundred eighty-six thousand, two hundred forty".