1128917088 has 120 divisors (see below), whose sum is σ = 3575613888. Its totient is φ = 347348736.

The previous prime is 1128917077. The next prime is 1128917093. The reversal of 1128917088 is 8807198211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16945 + ... + 50447.

Almost surely, 2^1128917088 is an apocalyptic number.

1128917088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128917088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1787806944).

1128917088 is an abundant number, since it is smaller than the sum of its proper divisors (2446696800).

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

1128917088 is a wasteful number, since it uses less digits than its factorization.

1128917088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33538 (or 33521 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The square root of 1128917088 is about 33599.3614225033. The cubic root of 1128917088 is about 1041.2476053127.

The spelling of 1128917088 in words is "one billion, one hundred twenty-eight million, nine hundred seventeen thousand, eighty-eight".