1840222 has 16 divisors (see below), whose sum is σ = 2898432. Its totient is φ = 875160.

The previous prime is 1840219. The next prime is 1840231. The reversal of 1840222 is 2220481.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3933 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (181152).

2^1840222 is an apocalyptic number.

1840222 is a deficient number, since it is larger than the sum of its proper divisors (1058210).

1840222 is a wasteful number, since it uses less digits than its factorization.

1840222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1840222 is about 1356.5478244426. The cubic root of 1840222 is about 122.5434414857.

The spelling of 1840222 in words is "one million, eight hundred forty thousand, two hundred twenty-two".