3686228 has 72 divisors (see below), whose sum is σ = 8608320. Its totient is φ = 1347840.

The previous prime is 3686183. The next prime is 3686237. The reversal of 3686228 is 8226863.

3686228 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3686228 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89888 + ... + 89928.

It is an arithmetic number, because the mean of its divisors is an integer number (119560).

Almost surely, 2^3686228 is an apocalyptic number.

3686228 is a gapful number since it is divisible by the number (38) 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 3686228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4304160).

3686228 is an abundant number, since it is smaller than the sum of its proper divisors (4922092).

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

3686228 is a wasteful number, since it uses less digits than its factorization.

3686228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 82 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 3686228 is about 1919.9552078108. The cubic root of 3686228 is about 154.4758989507.

The spelling of 3686228 in words is "three million, six hundred eighty-six thousand, two hundred twenty-eight".