13506530 has 32 divisors (see below), whose sum is σ = 25997760. Its totient is φ = 5037120.

The previous prime is 13506529. The next prime is 13506541. The reversal of 13506530 is 3560531.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13506496 and 13506505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12200 + ... + 13260.

It is an arithmetic number, because the mean of its divisors is an integer number (812430).

Almost surely, 2^13506530 is an apocalyptic number.

13506530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13506530 is a deficient number, since it is larger than the sum of its proper divisors (12491230).

13506530 is a wasteful number, since it uses less digits than its factorization.

13506530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 13506530 is about 3675.1231271891. The cubic root of 13506530 is about 238.1485431952.

The spelling of 13506530 in words is "thirteen million, five hundred six thousand, five hundred thirty".