16390144 has 48 divisors (see below), whose sum is σ = 33611760. Its totient is φ = 7987200.

The previous prime is 16390123. The next prime is 16390163. The reversal of 16390144 is 44109361.

It is a congruent number.

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, 108469 + ... + 108619.

It is an arithmetic number, because the mean of its divisors is an integer number (700245).

Almost surely, 2^16390144 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 16390144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16805880).

16390144 is an abundant number, since it is smaller than the sum of its proper divisors (17221616).

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

16390144 is an equidigital number, since it uses as much as digits as its factorization.

16390144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 16390144 is about 4048.4742805161. The cubic root of 16390144 is about 254.0159123683.

The spelling of 16390144 in words is "sixteen million, three hundred ninety thousand, one hundred forty-four".