16604244 has 24 divisors (see below), whose sum is σ = 43048320. Its totient is φ = 5534712.

The previous prime is 16604243. The next prime is 16604267. The reversal of 16604244 is 44240661.

16604244 is a `hidden beast` number, since 16 + 604 + 2 + 44 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76764 + ... + 76979.

It is an arithmetic number, because the mean of its divisors is an integer number (1793680).

Almost surely, 2^16604244 is an apocalyptic number.

It is an amenable number.

16604244 is an abundant number, since it is smaller than the sum of its proper divisors (26444076).

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

16604244 is a wasteful number, since it uses less digits than its factorization.

16604244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153756 (or 153748 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 16604244 is about 4074.8305486241. The cubic root of 16604244 is about 255.1171779799.

The spelling of 16604244 in words is "sixteen million, six hundred four thousand, two hundred forty-four".