16723980 has 144 divisors (see below), whose sum is σ = 62497344. Its totient is φ = 3525120.

The previous prime is 16723957. The next prime is 16723997. The reversal of 16723980 is 8932761.

16723980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15870 + ... + 16890.

Almost surely, 2^16723980 is an apocalyptic number.

16723980 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 16723980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31248672).

16723980 is an abundant number, since it is smaller than the sum of its proper divisors (45773364).

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

16723980 is a wasteful number, since it uses less digits than its factorization.

16723980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 16723980 is about 4089.4963015022. The cubic root of 16723980 is about 255.7289407989.

The spelling of 16723980 in words is "sixteen million, seven hundred twenty-three thousand, nine hundred eighty".