16675840 has 44 divisors (see below), whose sum is σ = 40014756. Its totient is φ = 6668288.

The previous prime is 16675837. The next prime is 16675859. The reversal of 16675840 is 4857661.

It can be written as a sum of positive squares in 2 ways, for example, as 10445824 + 6230016 = 3232^2 + 2496^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 16675840.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492 + ... + 6748.

Almost surely, 2^16675840 is an apocalyptic number.

16675840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16675840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20007378).

16675840 is an abundant number, since it is smaller than the sum of its proper divisors (23338916).

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

16675840 is an equidigital number, since it uses as much as digits as its factorization.

16675840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 16675840 is about 4083.6062493830. The cubic root of 16675840 is about 255.4833329482.

The spelling of 16675840 in words is "sixteen million, six hundred seventy-five thousand, eight hundred forty".