1163556228 has 96 divisors (see below), whose sum is σ = 2942352000. Its totient is φ = 356530176.

The previous prime is 1163556209. The next prime is 1163556253. The reversal of 1163556228 is 8226553611.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3333798 + ... + 3334146.

It is an arithmetic number, because the mean of its divisors is an integer number (30649500).

Almost surely, 2^1163556228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163556228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471176000).

1163556228 is an abundant number, since it is smaller than the sum of its proper divisors (1778795772).

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

1163556228 is a wasteful number, since it uses less digits than its factorization.

1163556228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 707 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 1163556228 is about 34110.9400046378. The cubic root of 1163556228 is about 1051.7902122310.

The spelling of 1163556228 in words is "one billion, one hundred sixty-three million, five hundred fifty-six thousand, two hundred twenty-eight".