1128881232 has 40 divisors (see below), whose sum is σ = 3240308480. Its totient is φ = 376293600.

The previous prime is 1128881227. The next prime is 1128881263. The reversal of 1128881232 is 2321888211.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1306144 + ... + 1307007.

It is an arithmetic number, because the mean of its divisors is an integer number (81007712).

Almost surely, 2^1128881232 is an apocalyptic number.

1128881232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1128881232 is an abundant number, since it is smaller than the sum of its proper divisors (2111427248).

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

1128881232 is a wasteful number, since it uses less digits than its factorization.

1128881232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613168 (or 2613156 counting only the distinct ones).

The product of its digits is 12288, while the sum is 36.

The square root of 1128881232 is about 33598.8278366969. The cubic root of 1128881232 is about 1041.2365813649.

The spelling of 1128881232 in words is "one billion, one hundred twenty-eight million, eight hundred eighty-one thousand, two hundred thirty-two".