1817228 has 12 divisors (see below), whose sum is σ = 3634512. Its totient is φ = 778800.

The previous prime is 1817213. The next prime is 1817261. The reversal of 1817228 is 8227181.

1817228 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1817228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32423 + ... + 32478.

It is an arithmetic number, because the mean of its divisors is an integer number (302876).

2^1817228 is an apocalyptic number.

It is an amenable number.

1817228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1817228 is a wasteful number, since it uses less digits than its factorization.

1817228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64912 (or 64910 counting only the distinct ones).

The product of its digits is 1792, while the sum is 29.

The square root of 1817228 is about 1348.0459932806. The cubic root of 1817228 is about 122.0308978446.

The spelling of 1817228 in words is "one million, eight hundred seventeen thousand, two hundred twenty-eight".