16001976 has 16 divisors (see below), whose sum is σ = 40005000. Its totient is φ = 5333984.

The previous prime is 16001969. The next prime is 16002001. The reversal of 16001976 is 67910061.

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, 333351 + ... + 333398.

Almost surely, 2^16001976 is an apocalyptic number.

It is an amenable number.

16001976 is an abundant number, since it is smaller than the sum of its proper divisors (24003024).

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

16001976 is a wasteful number, since it uses less digits than its factorization.

16001976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666758 (or 666754 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 16001976 is about 4000.2469923743. The cubic root of 16001976 is about 251.9945829019.

The spelling of 16001976 in words is "sixteen million, one thousand, nine hundred seventy-six".