13806530 has 8 divisors (see below), whose sum is σ = 24851772. Its totient is φ = 5522608.

The previous prime is 13806503. The next prime is 13806539. The reversal of 13806530 is 3560831.

13806530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11648569 + 2157961 = 3413^2 + 1469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13806530.

It is not an unprimeable number, because it can be changed into a prime (13806539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690317 + ... + 690336.

Almost surely, 2^13806530 is an apocalyptic number.

13806530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13806530 is a deficient number, since it is larger than the sum of its proper divisors (11045242).

13806530 is a wasteful number, since it uses less digits than its factorization.

13806530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380660.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 13806530 is about 3715.7139287087. The cubic root of 13806530 is about 239.8988578451.

The spelling of 13806530 in words is "thirteen million, eight hundred six thousand, five hundred thirty".