16397204 has 12 divisors (see below), whose sum is σ = 28949844. Its totient is φ = 8125824.

The previous prime is 16397191. The next prime is 16397207. The reversal of 16397204 is 40279361.

It can be written as a sum of positive squares in 2 ways, for example, as 5769604 + 10627600 = 2402^2 + 3260^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16397207) 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 3 ways as a sum of consecutive naturals, for example, 17687 + ... + 18590.

It is an arithmetic number, because the mean of its divisors is an integer number (2412487).

Almost surely, 2^16397204 is an apocalyptic number.

It is an amenable number.

16397204 is a deficient number, since it is larger than the sum of its proper divisors (12552640).

16397204 is a wasteful number, since it uses less digits than its factorization.

16397204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36394 (or 36392 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 16397204 is about 4049.3461200544. The cubic root of 16397204 is about 254.0523793025.

The spelling of 16397204 in words is "sixteen million, three hundred ninety-seven thousand, two hundred four".