16560090 has 48 divisors (see below), whose sum is σ = 44228808. Its totient is φ = 4295808.

The previous prime is 16560083. The next prime is 16560101. The reversal of 16560090 is 9006561.

16560090 is a `hidden beast` number, since 1 + 656 + 0 + 0 + 9 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16136289 + 423801 = 4017^2 + 651^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 844 + ... + 5816.

Almost surely, 2^16560090 is an apocalyptic number.

16560090 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 16560090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22114404).

16560090 is an abundant number, since it is smaller than the sum of its proper divisors (27668718).

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

16560090 is a wasteful number, since it uses less digits than its factorization.

16560090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5023 (or 5020 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 16560090 is about 4069.4090480068. The cubic root of 16560090 is about 254.8908413988.

The spelling of 16560090 in words is "sixteen million, five hundred sixty thousand, ninety".