1145232228 has 24 divisors (see below), whose sum is σ = 3053952832. Its totient is φ = 327209184.

The previous prime is 1145232223. The next prime is 1145232229. The reversal of 1145232228 is 8222325411.

It is a junction number, because it is equal to n+sod(n) for n = 1145232195 and 1145232204.

It is not an unprimeable number, because it can be changed into a prime (1145232223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6816775 + ... + 6816942.

Almost surely, 2^1145232228 is an apocalyptic number.

It is an amenable number.

1145232228 is an abundant number, since it is smaller than the sum of its proper divisors (1908720604).

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

1145232228 is a wasteful number, since it uses less digits than its factorization.

1145232228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13633731 (or 13633729 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 1145232228 is about 33841.2799403332. The cubic root of 1145232228 is about 1046.2396795586.

Adding to 1145232228 its reverse (8222325411), we get a palindrome (9367557639).

The spelling of 1145232228 in words is "one billion, one hundred forty-five million, two hundred thirty-two thousand, two hundred twenty-eight".