13288140 has 36 divisors (see below), whose sum is σ = 40307904. Its totient is φ = 3543456.

The previous prime is 13288139. The next prime is 13288153. The reversal of 13288140 is 4188231.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 36732 + ... + 37091.

It is an arithmetic number, because the mean of its divisors is an integer number (1119664).

Almost surely, 2^13288140 is an apocalyptic number.

13288140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13288140 is an abundant number, since it is smaller than the sum of its proper divisors (27019764).

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

13288140 is a wasteful number, since it uses less digits than its factorization.

13288140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73838 (or 73833 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 13288140 is about 3645.2901119115. The cubic root of 13288140 is about 236.8580039230.

Subtracting from 13288140 its reverse (4188231), we obtain a palindrome (9099909).

The spelling of 13288140 in words is "thirteen million, two hundred eighty-eight thousand, one hundred forty".