1898228 has 6 divisors (see below), whose sum is σ = 3321906. Its totient is φ = 949112.

The previous prime is 1898227. The next prime is 1898243. The reversal of 1898228 is 8228981.

It can be written as a sum of positive squares in only one way, i.e., 1747684 + 150544 = 1322^2 + 388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1898191 and 1898200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237275 + ... + 237282.

It is an arithmetic number, because the mean of its divisors is an integer number (553651).

2^1898228 is an apocalyptic number.

It is an amenable number.

1898228 is a deficient number, since it is larger than the sum of its proper divisors (1423678).

1898228 is a wasteful number, since it uses less digits than its factorization.

1898228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474561 (or 474559 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 1898228 is about 1377.7619533141. The cubic root of 1898228 is about 123.8177169087.

The spelling of 1898228 in words is "one million, eight hundred ninety-eight thousand, two hundred twenty-eight".