16398032 has 40 divisors (see below), whose sum is σ = 37205952. Its totient is φ = 6854400.

The previous prime is 16398017. The next prime is 16398091. The reversal of 16398032 is 23089361.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 16398032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807 + ... + 6377.

Almost surely, 2^16398032 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 16398032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18602976).

16398032 is an abundant number, since it is smaller than the sum of its proper divisors (20807920).

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

16398032 is a wasteful number, since it uses less digits than its factorization.

16398032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 16398032 is about 4049.4483574927. The cubic root of 16398032 is about 254.0566554752.

The spelling of 16398032 in words is "sixteen million, three hundred ninety-eight thousand, thirty-two".