1994228 has 6 divisors (see below), whose sum is σ = 3489906. Its totient is φ = 997112.

The previous prime is 1994227. The next prime is 1994299. The reversal of 1994228 is 8224991.

It can be written as a sum of positive squares in only one way, i.e., 1993744 + 484 = 1412^2 + 22^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249275 + ... + 249282.

It is an arithmetic number, because the mean of its divisors is an integer number (581651).

2^1994228 is an apocalyptic number.

It is an amenable number.

1994228 is a deficient number, since it is larger than the sum of its proper divisors (1495678).

1994228 is a wasteful number, since it uses less digits than its factorization.

1994228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498561 (or 498559 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1994228 is about 1412.1713777017. The cubic root of 1994228 is about 125.8707837985.

It can be divided in two parts, 1994 and 228, that added together give a palindrome (2222).

The spelling of 1994228 in words is "one million, nine hundred ninety-four thousand, two hundred twenty-eight".