16940672 has 96 divisors (see below), whose sum is σ = 40872420. Its totient is φ = 6967296.

The previous prime is 16940639. The next prime is 16940689. The reversal of 16940672 is 27604961.

It can be written as a sum of positive squares in 2 ways, for example, as 15808576 + 1132096 = 3976^2 + 1064^2 .

It is a super-3 number, since 3×16940672³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232028 + ... + 232100.

Almost surely, 2^16940672 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 16940672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20436210).

16940672 is an abundant number, since it is smaller than the sum of its proper divisors (23931748).

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

16940672 is an equidigital number, since it uses as much as digits as its factorization.

16940672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 16940672 is about 4115.9047608029. The cubic root of 16940672 is about 256.8286947552.

The spelling of 16940672 in words is "sixteen million, nine hundred forty thousand, six hundred seventy-two".