13047746 has 4 divisors (see below), whose sum is σ = 19571622. Its totient is φ = 6523872.

The previous prime is 13047707. The next prime is 13047751. The reversal of 13047746 is 64774031.

It is a happy number.

13047746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 1221025 = 3439^2 + 1105^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261935 + ... + 3261938.

Almost surely, 2^13047746 is an apocalyptic number.

13047746 is a deficient number, since it is larger than the sum of its proper divisors (6523876).

13047746 is an equidigital number, since it uses as much as digits as its factorization.

13047746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6523875.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 13047746 is about 3612.1663859795. The cubic root of 13047746 is about 235.4209807269.

The spelling of 13047746 in words is "thirteen million, forty-seven thousand, seven hundred forty-six".