860736240 has 640 divisors, whose sum is σ = 3799756800. Its totient is φ = 174182400.

The previous prime is 860736229. The next prime is 860736259. The reversal of 860736240 is 42637068.

860736240 is a `hidden beast` number, since 8 + 607 + 3 + 6 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 860736195 and 860736204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5700165 + ... + 5700315.

It is an arithmetic number, because the mean of its divisors is an integer number (5937120).

Almost surely, 2^860736240 is an apocalyptic number.

860736240 is a gapful number since it is divisible by the number (80) 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 860736240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1899878400).

860736240 is an abundant number, since it is smaller than the sum of its proper divisors (2939020560).

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

860736240 is a wasteful number, since it uses less digits than its factorization.

860736240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 860736240 is about 29338.3066996035. The cubic root of 860736240 is about 951.2398364138.

The spelling of 860736240 in words is "eight hundred sixty million, seven hundred thirty-six thousand, two hundred forty".