16397996 has 24 divisors (see below), whose sum is σ = 30604896. Its totient is φ = 7660800.

The previous prime is 16397989. The next prime is 16397999. The reversal of 16397996 is 69979361.

It is a super-4 number, since 4×16397996⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (16397999) 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, 9470 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (1275204).

Almost surely, 2^16397996 is an apocalyptic number.

It is an amenable number.

16397996 is a deficient number, since it is larger than the sum of its proper divisors (14206900).

16397996 is a wasteful number, since it uses less digits than its factorization.

16397996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1767 counting only the distinct ones).

The product of its digits is 551124, while the sum is 50.

The square root of 16397996 is about 4049.4439124403. The cubic root of 16397996 is about 254.0564695577.

The spelling of 16397996 in words is "sixteen million, three hundred ninety-seven thousand, nine hundred ninety-six".