16489044 has 72 divisors (see below), whose sum is σ = 48982752. Its totient is φ = 4610880.

The previous prime is 16489043. The next prime is 16489061. The reversal of 16489044 is 44098461.

It is a happy number.

16489044 is a `hidden beast` number, since 1 + 648 + 9 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16489043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3547 + ... + 6749.

It is an arithmetic number, because the mean of its divisors is an integer number (680316).

Almost surely, 2^16489044 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 16489044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24491376).

16489044 is an abundant number, since it is smaller than the sum of its proper divisors (32493708).

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

16489044 is a wasteful number, since it uses less digits than its factorization.

16489044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237 (or 3232 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 16489044 is about 4060.6703880025. The cubic root of 16489044 is about 254.5258084868.

The spelling of 16489044 in words is "sixteen million, four hundred eighty-nine thousand, forty-four".