16606728 has 32 divisors (see below), whose sum is σ = 46130400. Its totient is φ = 5535504.

The previous prime is 16606727. The next prime is 16606769. The reversal of 16606728 is 82760661.

It is a happy number.

16606728 is digitally balanced in base 2 and base 4, because in such bases 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 junction number, because it is equal to n+sod(n) for n = 16606692 and 16606701.

It is not an unprimeable number, because it can be changed into a prime (16606727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38226 + ... + 38657.

It is an arithmetic number, because the mean of its divisors is an integer number (1441575).

Almost surely, 2^16606728 is an apocalyptic number.

16606728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16606728 is an abundant number, since it is smaller than the sum of its proper divisors (29523672).

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

16606728 is a wasteful number, since it uses less digits than its factorization.

16606728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76898 (or 76888 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 16606728 is about 4075.1353351760. The cubic root of 16606728 is about 255.1298992149.

The spelling of 16606728 in words is "sixteen million, six hundred six thousand, seven hundred twenty-eight".