16044540 has 48 divisors (see below), whose sum is σ = 46478880. Its totient is φ = 4130560.

The previous prime is 16044527. The next prime is 16044541. The reversal of 16044540 is 4544061.

16044540 = 258² + 259² + ... + 402².

It is a self number, because there is not a number n which added to its sum of digits gives 16044540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16044541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (968310).

Almost surely, 2^16044540 is an apocalyptic number.

16044540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16044540 is an abundant number, since it is smaller than the sum of its proper divisors (30434340).

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

16044540 is a wasteful number, since it uses less digits than its factorization.

16044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9262 (or 9260 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 16044540 is about 4005.5636307516. The cubic root of 16044540 is about 252.2178136963.

The spelling of 16044540 in words is "sixteen million, forty-four thousand, five hundred forty".