16670720 has 112 divisors (see below), whose sum is σ = 44823888. Its totient is φ = 5898240.

The previous prime is 16670701. The next prime is 16670743. The reversal of 16670720 is 2707661.

It is a nialpdrome in base 16.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450542 + ... + 450578.

Almost surely, 2^16670720 is an apocalyptic number.

16670720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16670720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22411944).

16670720 is an abundant number, since it is smaller than the sum of its proper divisors (28153168).

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

16670720 is an equidigital number, since it uses as much as digits as its factorization.

16670720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 16670720 is about 4082.9793043806. The cubic root of 16670720 is about 255.4571831698.

The spelling of 16670720 in words is "sixteen million, six hundred seventy thousand, seven hundred twenty".