1916228 has 12 divisors (see below), whose sum is σ = 3375120. Its totient is φ = 951912.

The previous prime is 1916183. The next prime is 1916231. The reversal of 1916228 is 8226191.

It is a self number, because there is not a number n which added to its sum of digits gives 1916228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (281260).

2^1916228 is an apocalyptic number.

It is an amenable number.

1916228 is a deficient number, since it is larger than the sum of its proper divisors (1458892).

1916228 is a wasteful number, since it uses less digits than its factorization.

1916228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3104 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 1916228 is about 1384.2788736378. The cubic root of 1916228 is about 124.2078546500.

The spelling of 1916228 in words is "one million, nine hundred sixteen thousand, two hundred twenty-eight".