1133494728 has 32 divisors (see below), whose sum is σ = 2846457600. Its totient is φ = 376135488.

The previous prime is 1133494721. The next prime is 1133494777. The reversal of 1133494728 is 8274943311.

It is a self number, because there is not a number n which added to its sum of digits gives 1133494728.

It is not an unprimeable number, because it can be changed into a prime (1133494721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100543 + ... + 111246.

It is an arithmetic number, because the mean of its divisors is an integer number (88951800).

Almost surely, 2^1133494728 is an apocalyptic number.

It is an amenable number.

1133494728 is an abundant number, since it is smaller than the sum of its proper divisors (1712962872).

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

1133494728 is a wasteful number, since it uses less digits than its factorization.

1133494728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212021 (or 212017 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 1133494728 is about 33667.4134438629. The cubic root of 1133494728 is about 1042.6530904805.

The spelling of 1133494728 in words is "one billion, one hundred thirty-three million, four hundred ninety-four thousand, seven hundred twenty-eight".