8402228 has 24 divisors (see below), whose sum is σ = 15369480. Its totient is φ = 4014080.

The previous prime is 8402221. The next prime is 8402279. The reversal of 8402228 is 8222048.

It can be written as a sum of positive squares in 4 ways, for example, as 795664 + 7606564 = 892^2 + 2758^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8402197 and 8402206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8402221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12788 + ... + 13428.

It is an arithmetic number, because the mean of its divisors is an integer number (640395).

Almost surely, 2^8402228 is an apocalyptic number.

It is an amenable number.

8402228 is a deficient number, since it is larger than the sum of its proper divisors (6967252).

8402228 is a wasteful number, since it uses less digits than its factorization.

8402228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 8402228 is about 2898.6596902707. The cubic root of 8402228 is about 203.2972422431.

The spelling of 8402228 in words is "eight million, four hundred two thousand, two hundred twenty-eight".