13521734 has 4 divisors (see below), whose sum is σ = 20282604. Its totient is φ = 6760866.

The previous prime is 13521733. The next prime is 13521751. The reversal of 13521734 is 43712531.

13521734 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, and also an emirpimes, since its reverse is a distinct semiprime: 43712531 = 83 ⋅526657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13521733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3380432 + ... + 3380435.

It is an arithmetic number, because the mean of its divisors is an integer number (5070651).

Almost surely, 2^13521734 is an apocalyptic number.

13521734 is a deficient number, since it is larger than the sum of its proper divisors (6760870).

13521734 is an equidigital number, since it uses as much as digits as its factorization.

13521734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760869.

The product of its digits is 2520, while the sum is 26.

The square root of 13521734 is about 3677.1910475253. The cubic root of 13521734 is about 238.2378691899.

The spelling of 13521734 in words is "thirteen million, five hundred twenty-one thousand, seven hundred thirty-four".