16041816 has 72 divisors (see below), whose sum is σ = 50551020. Its totient is φ = 4582368.

The previous prime is 16041803. The next prime is 16041821. The reversal of 16041816 is 61814061.

16041816 = 548² + 549² + ... + 596².

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 16041816.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 1255 + ... + 5801.

Almost surely, 2^16041816 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 16041816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25275510).

16041816 is an abundant number, since it is smaller than the sum of its proper divisors (34509204).

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

16041816 is a wasteful number, since it uses less digits than its factorization.

16041816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4573 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 16041816 is about 4005.2235892644. The cubic root of 16041816 is about 252.2035392617.

Adding to 16041816 its reverse (61814061), we get a palindrome (77855877).

The spelling of 16041816 in words is "sixteen million, forty-one thousand, eight hundred sixteen".