16667972 has 12 divisors (see below), whose sum is σ = 29663760. Its totient is φ = 8192616.

The previous prime is 16667971. The next prime is 16667983. The reversal of 16667972 is 27976661.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (16667971) 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, 35078 + ... + 35549.

It is an arithmetic number, because the mean of its divisors is an integer number (2471980).

Almost surely, 2^16667972 is an apocalyptic number.

It is an amenable number.

16667972 is a deficient number, since it is larger than the sum of its proper divisors (12995788).

16667972 is a wasteful number, since it uses less digits than its factorization.

16667972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70690 (or 70688 counting only the distinct ones).

The product of its digits is 190512, while the sum is 44.

The square root of 16667972 is about 4082.6427715390. The cubic root of 16667972 is about 255.4431458854.

The spelling of 16667972 in words is "sixteen million, six hundred sixty-seven thousand, nine hundred seventy-two".