1128305250 has 96 divisors (see below), whose sum is σ = 3183732864. Its totient is φ = 287786400.

The previous prime is 1128305221. The next prime is 1128305257. The reversal of 1128305250 is 525038211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1128305257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40849 + ... + 62651.

It is an arithmetic number, because the mean of its divisors is an integer number (33163884).

Almost surely, 2^1128305250 is an apocalyptic number.

1128305250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1128305250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1591866432).

1128305250 is an abundant number, since it is smaller than the sum of its proper divisors (2055427614).

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

1128305250 is a wasteful number, since it uses less digits than its factorization.

1128305250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21849 (or 21836 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1128305250 is about 33590.2552833407. The cubic root of 1128305250 is about 1041.0594633652.

The spelling of 1128305250 in words is "one billion, one hundred twenty-eight million, three hundred five thousand, two hundred fifty".