1155228 has 12 divisors (see below), whose sum is σ = 2695560. Its totient is φ = 385072.

The previous prime is 1155223. The next prime is 1155233. The reversal of 1155228 is 8225511.

1155228 is nontrivially palindromic in base 8.

It is an interprime number because it is at equal distance from previous prime (1155223) and next prime (1155233).

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

It is a junction number, because it is equal to n+sod(n) for n = 1155198 and 1155207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155223) 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, 48123 + ... + 48146.

It is an arithmetic number, because the mean of its divisors is an integer number (224630).

2^1155228 is an apocalyptic number.

It is an amenable number.

1155228 is an abundant number, since it is smaller than the sum of its proper divisors (1540332).

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

1155228 is a wasteful number, since it uses less digits than its factorization.

1155228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96276 (or 96274 counting only the distinct ones).

The product of its digits is 800, while the sum is 24.

The square root of 1155228 is about 1074.8153329759. The cubic root of 1155228 is about 104.9274782667.

The spelling of 1155228 in words is "one million, one hundred fifty-five thousand, two hundred twenty-eight".