13530530 has 64 divisors (see below), whose sum is σ = 28153440. Its totient is φ = 4644864.

The previous prime is 13530523. The next prime is 13530557. The reversal of 13530530 is 3503531.

It can be written as a sum of positive squares in 16 ways, for example, as 1510441 + 12020089 = 1229^2 + 3467^2 .

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 31 ways as a sum of consecutive naturals, for example, 139442 + ... + 139538.

Almost surely, 2^13530530 is an apocalyptic number.

13530530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13530530 is an abundant number, since it is smaller than the sum of its proper divisors (14622910).

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

13530530 is a wasteful number, since it uses less digits than its factorization.

13530530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 13530530 is about 3678.3868747047. The cubic root of 13530530 is about 238.2895165617.

The spelling of 13530530 in words is "thirteen million, five hundred thirty thousand, five hundred thirty".