1128503216 has 20 divisors (see below), whose sum is σ = 2261871600. Its totient is φ = 544794432.

The previous prime is 1128503209. The next prime is 1128503221. The reversal of 1128503216 is 6123058211.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1215596 + ... + 1216523.

It is an arithmetic number, because the mean of its divisors is an integer number (113093580).

Almost surely, 2^1128503216 is an apocalyptic number.

1128503216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1128503216 is an abundant number, since it is smaller than the sum of its proper divisors (1133368384).

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

1128503216 is a wasteful number, since it uses less digits than its factorization.

1128503216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432156 (or 2432150 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1128503216 is about 33593.2019313432. The cubic root of 1128503216 is about 1041.1203459220.

The spelling of 1128503216 in words is "one billion, one hundred twenty-eight million, five hundred three thousand, two hundred sixteen".