1131750228 has 48 divisors (see below), whose sum is σ = 3099576704. Its totient is φ = 314616960.

The previous prime is 1131750223. The next prime is 1131750247. The reversal of 1131750228 is 8220571311.

It is a junction number, because it is equal to n+sod(n) for n = 1131750195 and 1131750204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131750223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178963 + ... + 185178.

Almost surely, 2^1131750228 is an apocalyptic number.

It is an amenable number.

1131750228 is an abundant number, since it is smaller than the sum of its proper divisors (1967826476).

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

1131750228 is a wasteful number, since it uses less digits than its factorization.

1131750228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364192 (or 364190 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 1131750228 is about 33641.4956266810. The cubic root of 1131750228 is about 1042.1179189743.

The spelling of 1131750228 in words is "one billion, one hundred thirty-one million, seven hundred fifty thousand, two hundred twenty-eight".