16667872 has 48 divisors (see below), whose sum is σ = 35773920. Its totient is φ = 7598592.

The previous prime is 16667869. The next prime is 16667879. The reversal of 16667872 is 27876661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16667879) 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 7 ways as a sum of consecutive naturals, for example, 42654 + ... + 43042.

It is an arithmetic number, because the mean of its divisors is an integer number (745290).

Almost surely, 2^16667872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16667872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17886960).

16667872 is an abundant number, since it is smaller than the sum of its proper divisors (19106048).

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

16667872 is a wasteful number, since it uses less digits than its factorization.

16667872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 507 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 16667872 is about 4082.6305245515. The cubic root of 16667872 is about 255.4426350381.

The spelling of 16667872 in words is "sixteen million, six hundred sixty-seven thousand, eight hundred seventy-two".