8178228 has 36 divisors (see below), whose sum is σ = 20762560. Its totient is φ = 2714256.

The previous prime is 8178217. The next prime is 8178251. The reversal of 8178228 is 8228718.

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

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 = 8178192 and 8178201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12903 + ... + 13521.

Almost surely, 2^8178228 is an apocalyptic number.

It is an amenable number.

8178228 is an abundant number, since it is smaller than the sum of its proper divisors (12584332).

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

8178228 is a wasteful number, since it uses less digits than its factorization.

8178228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 991 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 8178228 is about 2859.7601298011. The cubic root of 8178228 is about 201.4743382607.

It can be divided in two parts, 81782 and 28, that added together give a triangular number (81810 = T₄₀₄).

The spelling of 8178228 in words is "eight million, one hundred seventy-eight thousand, two hundred twenty-eight".