16040044 has 24 divisors (see below), whose sum is σ = 29952720. Its totient is φ = 7489536.

The previous prime is 16039963. The next prime is 16040053. The reversal of 16040044 is 44004061.

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 7 ways as a sum of consecutive naturals, for example, 8604 + ... + 10300.

It is an arithmetic number, because the mean of its divisors is an integer number (1248030).

Almost surely, 2^16040044 is an apocalyptic number.

It is an amenable number.

16040044 is a deficient number, since it is larger than the sum of its proper divisors (13912676).

16040044 is a wasteful number, since it uses less digits than its factorization.

16040044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 16040044 is about 4005.0023720343. The cubic root of 16040044 is about 252.1942526754.

Subtracting from 16040044 its sum of digits (19), we obtain a square (16040025 = 4005²).

It can be divided in two parts, 160 and 40044, that added together give a palindrome (40204).

The spelling of 16040044 in words is "sixteen million, forty thousand, forty-four".