16144544 has 36 divisors (see below), whose sum is σ = 34404174. Its totient is φ = 7413504.

The previous prime is 16144523. The next prime is 16144553. The reversal of 16144544 is 44544161.

It can be written as a sum of positive squares in 3 ways, for example, as 16096144 + 48400 = 4012^2 + 220^2 .

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 5 ways as a sum of consecutive naturals, for example, 81854 + ... + 82050.

Almost surely, 2^16144544 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 16144544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17202087).

16144544 is an abundant number, since it is smaller than the sum of its proper divisors (18259630).

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

16144544 is an equidigital number, since it uses as much as digits as its factorization.

16144544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 212 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 16144544 is about 4018.0273767111. The cubic root of 16144544 is about 252.7407448044.

The spelling of 16144544 in words is "sixteen million, one hundred forty-four thousand, five hundred forty-four".