1899228 has 12 divisors (see below), whose sum is σ = 4431560. Its totient is φ = 633072.

The previous prime is 1899199. The next prime is 1899253. The reversal of 1899228 is 8229981.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a congruent number.

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, 79123 + ... + 79146.

2^1899228 is an apocalyptic number.

It is an amenable number.

1899228 is an abundant number, since it is smaller than the sum of its proper divisors (2532332).

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

1899228 is a wasteful number, since it uses less digits than its factorization.

1899228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158276 (or 158274 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 1899228 is about 1378.1248129252. The cubic root of 1899228 is about 123.8394557762.

The spelling of 1899228 in words is "one million, eight hundred ninety-nine thousand, two hundred twenty-eight".