1099228 has 12 divisors (see below), whose sum is σ = 2071720. Its totient is φ = 507312.

The previous prime is 1099223. The next prime is 1099247. The reversal of 1099228 is 8229901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1099223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10518 + ... + 10621.

2^1099228 is an apocalyptic number.

It is an amenable number.

1099228 is a deficient number, since it is larger than the sum of its proper divisors (972492).

1099228 is a wasteful number, since it uses less digits than its factorization.

1099228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21156 (or 21154 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1099228 is about 1048.4407470143. The cubic root of 1099228 is about 103.2038567955.

The spelling of 1099228 in words is "one million, ninety-nine thousand, two hundred twenty-eight".