1128247666 has 64 divisors (see below), whose sum is σ = 2160377856. Its totient is φ = 429883200.

The previous prime is 1128247663. The next prime is 1128247667. The reversal of 1128247666 is 6667428211.

It is not an unprimeable number, because it can be changed into a prime (1128247661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1754341 + ... + 1754983.

It is an arithmetic number, because the mean of its divisors is an integer number (33755904).

Almost surely, 2^1128247666 is an apocalyptic number.

1128247666 is a deficient number, since it is larger than the sum of its proper divisors (1032130190).

1128247666 is a wasteful number, since it uses less digits than its factorization.

1128247666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its digits is 193536, while the sum is 43.

The square root of 1128247666 is about 33589.3981190494. The cubic root of 1128247666 is about 1041.0417526177.

The spelling of 1128247666 in words is "one billion, one hundred twenty-eight million, two hundred forty-seven thousand, six hundred sixty-six".