1905228 has 96 divisors (see below), whose sum is σ = 5644800. Its totient is φ = 551232.

The previous prime is 1905199. The next prime is 1905247. The reversal of 1905228 is 8225091.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32263 + ... + 32321.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2^1905228 is an apocalyptic number.

1905228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1905228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822400).

1905228 is an abundant number, since it is smaller than the sum of its proper divisors (3739572).

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

1905228 is a wasteful number, since it uses less digits than its factorization.

1905228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1905228 is about 1380.2999673984. The cubic root of 1905228 is about 123.9697289965.

The spelling of 1905228 in words is "one million, nine hundred five thousand, two hundred twenty-eight".