3678228 has 36 divisors (see below), whose sum is σ = 9417408. Its totient is φ = 1210320.

The previous prime is 3678223. The next prime is 3678247. The reversal of 3678228 is 8228763.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×3678228² = 27058722439968, which contains 22 as substring.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3678192 and 3678201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2373 + ... + 3603.

Almost surely, 2^3678228 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 3678228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4708704).

3678228 is an abundant number, since it is smaller than the sum of its proper divisors (5739180).

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

3678228 is a wasteful number, since it uses less digits than its factorization.

3678228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1319 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 3678228 is about 1917.8706942857. The cubic root of 3678228 is about 154.3640680791.

The spelling of 3678228 in words is "three million, six hundred seventy-eight thousand, two hundred twenty-eight".