16920832 has 36 divisors (see below), whose sum is σ = 34071436. Its totient is φ = 8386560.

The previous prime is 16920821. The next prime is 16920859. The reversal of 16920832 is 23802961.

It can be written as a sum of positive squares in 2 ways, for example, as 1679616 + 15241216 = 1296^2 + 3904^2 .

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 16920794 and 16920803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39982 + ... + 40402.

Almost surely, 2^16920832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16920832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17035718).

16920832 is an abundant number, since it is smaller than the sum of its proper divisors (17150604).

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

16920832 is an equidigital number, since it uses as much as digits as its factorization.

16920832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 16920832 is about 4113.4938920582. The cubic root of 16920832 is about 256.7283942912.

The spelling of 16920832 in words is "sixteen million, nine hundred twenty thousand, eight hundred thirty-two".