1128330920 has 32 divisors (see below), whose sum is σ = 2576642400. Its totient is φ = 444595008.

The previous prime is 1128330913. The next prime is 1128330923. The reversal of 1128330920 is 290338211.

It is not an unprimeable number, because it can be changed into a prime (1128330923) 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, 207830 + ... + 213189.

It is an arithmetic number, because the mean of its divisors is an integer number (80520075).

Almost surely, 2^1128330920 is an apocalyptic number.

1128330920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128330920 is an abundant number, since it is smaller than the sum of its proper divisors (1448311480).

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

1128330920 is a wasteful number, since it uses less digits than its factorization.

1128330920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421097 (or 421093 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1128330920 is about 33590.6373860336. The cubic root of 1128330920 is about 1041.0673583309.

The spelling of 1128330920 in words is "one billion, one hundred twenty-eight million, three hundred thirty thousand, nine hundred twenty".