13816530 has 144 divisors (see below), whose sum is σ = 45189144. Its totient is φ = 2903040.

The previous prime is 13816511. The next prime is 13816531. The reversal of 13816530 is 3561831.

13816530 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 653 + 0 = 666.

13816530 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10323369 + 3493161 = 3213^2 + 1869^2 .

13816530 is an undulating number in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 13816494 and 13816503.

It is not an unprimeable number, because it can be changed into a prime (13816531) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 57210 + ... + 57450.

Almost surely, 2^13816530 is an apocalyptic number.

13816530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13816530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22594572).

13816530 is an abundant number, since it is smaller than the sum of its proper divisors (31372614).

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

13816530 is a wasteful number, since it uses less digits than its factorization.

13816530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13816530 is about 3717.0593215605. The cubic root of 13816530 is about 239.9567630445.

The spelling of 13816530 in words is "thirteen million, eight hundred sixteen thousand, five hundred thirty".