1128548500 has 24 divisors (see below), whose sum is σ = 2464751016. Its totient is φ = 451419200.

The previous prime is 1128548497. The next prime is 1128548501. The reversal of 1128548500 is 58458211.

It can be written as a sum of positive squares in 4 ways, for example, as 21123216 + 1107425284 = 4596^2 + 33278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128548501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128049 + ... + 1129048.

It is an arithmetic number, because the mean of its divisors is an integer number (102697959).

Almost surely, 2^1128548500 is an apocalyptic number.

1128548500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128548500 is an abundant number, since it is smaller than the sum of its proper divisors (1336202516).

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

1128548500 is a wasteful number, since it uses less digits than its factorization.

1128548500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257116 (or 2257104 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 1128548500 is about 33593.8759299965. The cubic root of 1128548500 is about 1041.1342715841.

The spelling of 1128548500 in words is "one billion, one hundred twenty-eight million, five hundred forty-eight thousand, five hundred".