1239568560 has 120 divisors (see below), whose sum is σ = 4169405760. Its totient is φ = 330034176.

The previous prime is 1239568507. The next prime is 1239568597. The reversal of 1239568560 is 658659321.

1239568560 is a `hidden beast` number, since 1 + 2 + 39 + 56 + 8 + 560 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 747252 + ... + 748908.

It is an arithmetic number, because the mean of its divisors is an integer number (34745048).

Almost surely, 2^1239568560 is an apocalyptic number.

1239568560 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 1239568560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2084702880).

1239568560 is an abundant number, since it is smaller than the sum of its proper divisors (2929837200).

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

1239568560 is a wasteful number, since it uses less digits than its factorization.

1239568560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2706 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 1239568560 is about 35207.5071540148. The cubic root of 1239568560 is about 1074.2124565390.

The spelling of 1239568560 in words is "one billion, two hundred thirty-nine million, five hundred sixty-eight thousand, five hundred sixty".