16516530 has 96 divisors (see below), whose sum is σ = 45826560. Its totient is φ = 4118400.

The previous prime is 16516471. The next prime is 16516579. The reversal of 16516530 is 3561561.

It is a happy number.

16516530 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 653 + 0 = 666.

16516530 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 = 16516494 and 16516503.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163480 + ... + 163580.

It is an arithmetic number, because the mean of its divisors is an integer number (477360).

Almost surely, 2^16516530 is an apocalyptic number.

16516530 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 16516530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22913280).

16516530 is an abundant number, since it is smaller than the sum of its proper divisors (29310030).

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

16516530 is a wasteful number, since it uses less digits than its factorization.

16516530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 16516530 is about 4064.0533953185. The cubic root of 16516530 is about 254.6671551240.

The spelling of 16516530 in words is "sixteen million, five hundred sixteen thousand, five hundred thirty".