16109956 has 12 divisors (see below), whose sum is σ = 29102080. Its totient is φ = 7795080.

The previous prime is 16109953. The next prime is 16110001. The reversal of 16109956 is 65990161.

16109956 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (16109953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64836 + ... + 65083.

Almost surely, 2^16109956 is an apocalyptic number.

16109956 is the 2539-th centered pentagonal number.

It is an amenable number.

16109956 is a deficient number, since it is larger than the sum of its proper divisors (12992124).

16109956 is a wasteful number, since it uses less digits than its factorization.

16109956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129954 (or 129952 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 16109956 is about 4013.7209668835. The cubic root of 16109956 is about 252.5601255373.

The spelling of 16109956 in words is "sixteen million, one hundred nine thousand, nine hundred fifty-six".