1128504240 has 120 divisors (see below), whose sum is σ = 3989409840. Its totient is φ = 285092352.

The previous prime is 1128504233. The next prime is 1128504277. The reversal of 1128504240 is 424058211.

1128504240 is a `hidden beast` number, since 112 + 8 + 504 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27567 + ... + 54926.

It is an arithmetic number, because the mean of its divisors is an integer number (33245082).

Almost surely, 2^1128504240 is an apocalyptic number.

1128504240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128504240 is an abundant number, since it is smaller than the sum of its proper divisors (2860905600).

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

1128504240 is a wasteful number, since it uses less digits than its factorization.

1128504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82531 (or 82522 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1128504240 is about 33593.2171725186. The cubic root of 1128504240 is about 1041.1206608250.

The spelling of 1128504240 in words is "one billion, one hundred twenty-eight million, five hundred four thousand, two hundred forty".