1128303900 has 216 divisors, whose sum is σ = 3752787584. Its totient is φ = 283046400.

The previous prime is 1128303877. The next prime is 1128303973. The reversal of 1128303900 is 93038211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1031754 + ... + 1032846.

Almost surely, 2^1128303900 is an apocalyptic number.

1128303900 is a gapful number since it is divisible by the number (10) 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 1128303900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1876393792).

1128303900 is an abundant number, since it is smaller than the sum of its proper divisors (2624483684).

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

1128303900 is a wasteful number, since it uses less digits than its factorization.

1128303900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1128303900 is about 33590.2351882210. The cubic root of 1128303900 is about 1041.0590481611.

The spelling of 1128303900 in words is "one billion, one hundred twenty-eight million, three hundred three thousand, nine hundred".