13409636 has 24 divisors (see below), whose sum is σ = 24482304. Its totient is φ = 6420960.

The previous prime is 13409633. The next prime is 13409647. The reversal of 13409636 is 63690431.

It is a happy number.

13409636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (13409633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8381 + ... + 9851.

It is an arithmetic number, because the mean of its divisors is an integer number (1020096).

Almost surely, 2^13409636 is an apocalyptic number.

It is an amenable number.

13409636 is a deficient number, since it is larger than the sum of its proper divisors (11072668).

13409636 is a wasteful number, since it uses less digits than its factorization.

13409636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 13409636 is about 3661.9169843130. The cubic root of 13409636 is about 237.5776942484.

The spelling of 13409636 in words is "thirteen million, four hundred nine thousand, six hundred thirty-six".