1128580540 has 24 divisors (see below), whose sum is σ = 2371535712. Its totient is φ = 451143360.

The previous prime is 1128580517. The next prime is 1128580561. The reversal of 1128580540 is 450858211.

It is a junction number, because it is equal to n+sod(n) for n = 1128580496 and 1128580505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15505 + ... + 49975.

It is an arithmetic number, because the mean of its divisors is an integer number (98813988).

Almost surely, 2^1128580540 is an apocalyptic number.

1128580540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128580540 is an abundant number, since it is smaller than the sum of its proper divisors (1242955172).

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

1128580540 is a wasteful number, since it uses less digits than its factorization.

1128580540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36117 (or 36115 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 1128580540 is about 33594.3527992429. The cubic root of 1128580540 is about 1041.1441242477.

The spelling of 1128580540 in words is "one billion, one hundred twenty-eight million, five hundred eighty thousand, five hundred forty".