16040885 has 24 divisors (see below), whose sum is σ = 22567896. Its totient is φ = 10913280.

The previous prime is 16040879. The next prime is 16040887. The reversal of 16040885 is 58804061.

It can be written as a sum of positive squares in 4 ways, for example, as 1002001 + 15038884 = 1001^2 + 3878^2 .

It is not a de Polignac number, because 16040885 - 2¹⁰ = 16039861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040887) 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, 56945 + ... + 57225.

It is an arithmetic number, because the mean of its divisors is an integer number (940329).

Almost surely, 2^16040885 is an apocalyptic number.

It is an amenable number.

16040885 is a deficient number, since it is larger than the sum of its proper divisors (6527011).

16040885 is a wasteful number, since it uses less digits than its factorization.

16040885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 16040885 is about 4005.1073643537. The cubic root of 16040885 is about 252.1986602206.

The spelling of 16040885 in words is "sixteen million, forty thousand, eight hundred eighty-five".