13140236 has 12 divisors (see below), whose sum is σ = 23105880. Its totient is φ = 6538560.

The previous prime is 13140221. The next prime is 13140271. The reversal of 13140236 is 63204131.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6941 + ... + 8628.

It is an arithmetic number, because the mean of its divisors is an integer number (1925490).

Almost surely, 2^13140236 is an apocalyptic number.

It is an amenable number.

13140236 is a deficient number, since it is larger than the sum of its proper divisors (9965644).

13140236 is a wasteful number, since it uses less digits than its factorization.

13140236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15784 (or 15782 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 13140236 is about 3624.9463444305. The cubic root of 13140236 is about 235.9759383685.

Adding to 13140236 its reverse (63204131), we get a palindrome (76344367).

The spelling of 13140236 in words is "thirteen million, one hundred forty thousand, two hundred thirty-six".