13239534 has 32 divisors (see below), whose sum is σ = 33014016. Its totient is φ = 3438720.

The previous prime is 13239533. The next prime is 13239539. The reversal of 13239534 is 43593231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13239533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13867 + ... + 14790.

It is an arithmetic number, because the mean of its divisors is an integer number (1031688).

Almost surely, 2^13239534 is an apocalyptic number.

13239534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13239534 is an abundant number, since it is smaller than the sum of its proper divisors (19774482).

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

13239534 is a wasteful number, since it uses less digits than its factorization.

13239534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28680.

The product of its digits is 9720, while the sum is 30.

The square root of 13239534 is about 3638.6170449774. The cubic root of 13239534 is about 236.5688542001.

The spelling of 13239534 in words is "thirteen million, two hundred thirty-nine thousand, five hundred thirty-four".