16404696 has 144 divisors (see below), whose sum is σ = 56019600. Its totient is φ = 4245120.

The previous prime is 16404679. The next prime is 16404709. The reversal of 16404696 is 69640461.

16404696 is a `hidden beast` number, since 1 + 640 + 4 + 6 + 9 + 6 = 666.

16404696 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16404696² = 538228101704832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16404696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60850 + ... + 61118.

It is an arithmetic number, because the mean of its divisors is an integer number (389025).

Almost surely, 2^16404696 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 16404696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28009800).

16404696 is an abundant number, since it is smaller than the sum of its proper divisors (39614904).

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

16404696 is a wasteful number, since it uses less digits than its factorization.

16404696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 16404696 is about 4050.2711020375. The cubic root of 16404696 is about 254.0910661952.

It can be divided in two parts, 1640 and 4696, that added together give a palindrome (6336).

The spelling of 16404696 in words is "sixteen million, four hundred four thousand, six hundred ninety-six".