1810228 has 24 divisors (see below), whose sum is σ = 3834432. Its totient is φ = 729984.

The previous prime is 1810219. The next prime is 1810241. The reversal of 1810228 is 8220181.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1810199 and 1810208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426 + ... + 2377.

It is an arithmetic number, because the mean of its divisors is an integer number (159768).

2^1810228 is an apocalyptic number.

It is an amenable number.

1810228 is an abundant number, since it is smaller than the sum of its proper divisors (2024204).

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

1810228 is a wasteful number, since it uses less digits than its factorization.

1810228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831 (or 3829 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1810228 is about 1345.4471375717. The cubic root of 1810228 is about 121.8740077061.

The spelling of 1810228 in words is "one million, eight hundred ten thousand, two hundred twenty-eight".