16559240 has 16 divisors (see below), whose sum is σ = 37258380. Its totient is φ = 6623680.

The previous prime is 16559237. The next prime is 16559303. The reversal of 16559240 is 4295561.

It is a happy number.

16559240 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 13823524 + 2735716 = 3718^2 + 1654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16559197 and 16559206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206951 + ... + 207030.

Almost surely, 2^16559240 is an apocalyptic number.

16559240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16559240 is an abundant number, since it is smaller than the sum of its proper divisors (20699140).

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

16559240 is a wasteful number, since it uses less digits than its factorization.

16559240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413992 (or 413988 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 16559240 is about 4069.3046088982. The cubic root of 16559240 is about 254.8864802928.

The spelling of 16559240 in words is "sixteen million, five hundred fifty-nine thousand, two hundred forty".