28168602 has 64 divisors (see below), whose sum is σ = 73958400. Its totient is φ = 6929280.

The previous prime is 28168601. The next prime is 28168627. The reversal of 28168602 is 20686182.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28168601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7174 + ... + 10382.

It is an arithmetic number, because the mean of its divisors is an integer number (1155600).

Almost surely, 2^28168602 is an apocalyptic number.

28168602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28168602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36979200).

28168602 is an abundant number, since it is smaller than the sum of its proper divisors (45789798).

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

28168602 is a wasteful number, since it uses less digits than its factorization.

28168602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 28168602 is about 5307.4101028656. The cubic root of 28168602 is about 304.2671719241.

The spelling of 28168602 in words is "twenty-eight million, one hundred sixty-eight thousand, six hundred two".