13640524 has 6 divisors (see below), whose sum is σ = 23870924. Its totient is φ = 6820260.

The previous prime is 13640521. The next prime is 13640533. The reversal of 13640524 is 42504631.

It is not an unprimeable number, because it can be changed into a prime (13640521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1705062 + ... + 1705069.

Almost surely, 2^13640524 is an apocalyptic number.

It is an amenable number.

13640524 is a deficient number, since it is larger than the sum of its proper divisors (10230400).

13640524 is a wasteful number, since it uses less digits than its factorization.

13640524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3410135 (or 3410133 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 13640524 is about 3693.3080023199. The cubic root of 13640524 is about 238.9334852222.

The spelling of 13640524 in words is "thirteen million, six hundred forty thousand, five hundred twenty-four".