1089228 has 24 divisors (see below), whose sum is σ = 2904832. Its totient is φ = 311184.

The previous prime is 1089227. The next prime is 1089239. The reversal of 1089228 is 8229801.

It is a junction number, because it is equal to n+sod(n) for n = 1089195 and 1089204.

It is not an unprimeable number, because it can be changed into a prime (1089223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400 + ... + 6567.

2^1089228 is an apocalyptic number.

It is an amenable number.

1089228 is an abundant number, since it is smaller than the sum of its proper divisors (1815604).

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

1089228 is a wasteful number, since it uses less digits than its factorization.

1089228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12981 (or 12979 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1089228 is about 1043.6608644574. The cubic root of 1089228 is about 102.8899443444.

The spelling of 1089228 in words is "one million, eighty-nine thousand, two hundred twenty-eight".