13521634 has 16 divisors (see below), whose sum is σ = 23407488. Its totient is φ = 5738112.

The previous prime is 13521617. The next prime is 13521637. The reversal of 13521634 is 43612531.

13521634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13521599 and 13521608.

It is not an unprimeable number, because it can be changed into a prime (13521637) 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, 3247 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (1462968).

Almost surely, 2^13521634 is an apocalyptic number.

13521634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13521634 is a deficient number, since it is larger than the sum of its proper divisors (9885854).

13521634 is a wasteful number, since it uses less digits than its factorization.

13521634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489.

The product of its digits is 2160, while the sum is 25.

The square root of 13521634 is about 3677.1774501647. The cubic root of 13521634 is about 238.2372818923.

The spelling of 13521634 in words is "thirteen million, five hundred twenty-one thousand, six hundred thirty-four".