13140290 has 16 divisors (see below), whose sum is σ = 24099768. Its totient is φ = 5156736.

The previous prime is 13140289. The next prime is 13140293. The reversal of 13140290 is 9204131.

It can be written as a sum of positive squares in 4 ways, for example, as 13126129 + 14161 = 3623^2 + 119^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13140293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11867 + ... + 12926.

Almost surely, 2^13140290 is an apocalyptic number.

13140290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13140290 is a deficient number, since it is larger than the sum of its proper divisors (10959478).

13140290 is a wasteful number, since it uses less digits than its factorization.

13140290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24853.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13140290 is about 3624.9537928090. The cubic root of 13140290 is about 235.9762616169.

The spelling of 13140290 in words is "thirteen million, one hundred forty thousand, two hundred ninety".