1128274388 has 24 divisors (see below), whose sum is σ = 2076641280. Its totient is φ = 535635360.

The previous prime is 1128274387. The next prime is 1128274391. The reversal of 1128274388 is 8834728211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128274387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79268 + ... + 92411.

It is an arithmetic number, because the mean of its divisors is an integer number (86526720).

Almost surely, 2^1128274388 is an apocalyptic number.

It is an amenable number.

1128274388 is a deficient number, since it is larger than the sum of its proper divisors (948366892).

1128274388 is a wasteful number, since it uses less digits than its factorization.

1128274388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171767 (or 171765 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 1128274388 is about 33589.7958910143. The cubic root of 1128274388 is about 1041.0499714096.

The spelling of 1128274388 in words is "one billion, one hundred twenty-eight million, two hundred seventy-four thousand, three hundred eighty-eight".