1128599712 has 72 divisors (see below), whose sum is σ = 3212969760. Its totient is φ = 375788160.

The previous prime is 1128599701. The next prime is 1128599713. The reversal of 1128599712 is 2179958211.

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1128599713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378387 + ... + 381357.

It is an arithmetic number, because the mean of its divisors is an integer number (44624580).

Almost surely, 2^1128599712 is an apocalyptic number.

1128599712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1128599712 is an abundant number, since it is smaller than the sum of its proper divisors (2084370048).

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

1128599712 is a wasteful number, since it uses less digits than its factorization.

1128599712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306 (or 4295 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 1128599712 is about 33594.6381436086. The cubic root of 1128599712 is about 1041.1500197661.

The spelling of 1128599712 in words is "one billion, one hundred twenty-eight million, five hundred ninety-nine thousand, seven hundred twelve".