16040916 has 42 divisors (see below), whose sum is σ = 42095802. Its totient is φ = 5346000.

The previous prime is 16040909. The next prime is 16040917. The reversal of 16040916 is 61904061.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 72900 = 3996^2 + 270^2 .

It is a super-2 number, since 2×16040916² = 514621972238112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16040916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 166 + ... + 5666.

It is an arithmetic number, because the mean of its divisors is an integer number (1002281).

Almost surely, 2^16040916 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 16040916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047901).

16040916 is an abundant number, since it is smaller than the sum of its proper divisors (26054886).

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

16040916 is an equidigital number, since it uses as much as digits as its factorization.

16040916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5506 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16040916 is about 4005.1112344104. Note that the first 3 decimals coincide. The cubic root of 16040916 is about 252.1988226837.

Adding to 16040916 its reverse (61904061), we get a palindrome (77944977).

The spelling of 16040916 in words is "sixteen million, forty thousand, nine hundred sixteen".