16539530 has 32 divisors (see below), whose sum is σ = 35506944. Its totient is φ = 5423616.

The previous prime is 16539527. The next prime is 16539533. The reversal of 16539530 is 3593561.

It is an interprime number because it is at equal distance from previous prime (16539527) and next prime (16539533).

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16539533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3527 + ... + 6746.

It is an arithmetic number, because the mean of its divisors is an integer number (1109592).

Almost surely, 2^16539530 is an apocalyptic number.

16539530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16539530 is an abundant number, since it is smaller than the sum of its proper divisors (18967414).

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

16539530 is a wasteful number, since it uses less digits than its factorization.

16539530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 16539530 is about 4066.8820981189. The cubic root of 16539530 is about 254.7853120612.

The spelling of 16539530 in words is "sixteen million, five hundred thirty-nine thousand, five hundred thirty".