13239774 has 20 divisors (see below), whose sum is σ = 29667264. Its totient is φ = 4413204.

The previous prime is 13239773. The next prime is 13239781. The reversal of 13239774 is 47793231.

13239774 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239773) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 40702 + ... + 41025.

Almost surely, 2^13239774 is an apocalyptic number.

13239774 is an abundant number, since it is smaller than the sum of its proper divisors (16427490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13239774 is an equidigital number, since it uses as much as digits as its factorization.

13239774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81741 (or 81732 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 13239774 is about 3638.6500243909. The cubic root of 13239774 is about 236.5702836609.

The spelling of 13239774 in words is "thirteen million, two hundred thirty-nine thousand, seven hundred seventy-four".