166304028 has 48 divisors (see below), whose sum is σ = 424972800. Its totient is φ = 50198400.

The previous prime is 166304023. The next prime is 166304123. The reversal of 166304028 is 820403661.

166304028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166303986 and 166304004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166304023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33448 + ... + 38096.

It is an arithmetic number, because the mean of its divisors is an integer number (8853600).

Almost surely, 2^166304028 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 166304028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212486400).

166304028 is an abundant number, since it is smaller than the sum of its proper divisors (258668772).

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

166304028 is a wasteful number, since it uses less digits than its factorization.

166304028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938 (or 4936 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 166304028 is about 12895.8919040135. The cubic root of 166304028 is about 549.9217828164.

Adding to 166304028 its reverse (820403661), we get a palindrome (986707689).

The spelling of 166304028 in words is "one hundred sixty-six million, three hundred four thousand, twenty-eight".