16155996 has 12 divisors (see below), whose sum is σ = 37697352. Its totient is φ = 5385328.

The previous prime is 16155989. The next prime is 16156027. The reversal of 16155996 is 69955161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×16155996² = 522032413504032, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 673155 + ... + 673178.

It is an arithmetic number, because the mean of its divisors is an integer number (3141446).

Almost surely, 2^16155996 is an apocalyptic number.

It is an amenable number.

16155996 is an abundant number, since it is smaller than the sum of its proper divisors (21541356).

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

16155996 is a wasteful number, since it uses less digits than its factorization.

16155996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346340 (or 1346338 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 16155996 is about 4019.4522014822. The cubic root of 16155996 is about 252.8004905388.

The spelling of 16155996 in words is "sixteen million, one hundred fifty-five thousand, nine hundred ninety-six".