860244840 has 256 divisors, whose sum is σ = 3529612800. Its totient is φ = 181481472.

The previous prime is 860244793. The next prime is 860244841. The reversal of 860244840 is 48442068.

860244840 is a `hidden beast` number, since 8 + 602 + 4 + 4 + 8 + 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 = 860244795 and 860244804.

It is not an unprimeable number, because it can be changed into a prime (860244841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93904 + ... + 102656.

It is an arithmetic number, because the mean of its divisors is an integer number (13787550).

Almost surely, 2^860244840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860244840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1764806400).

860244840 is an abundant number, since it is smaller than the sum of its proper divisors (2669367960).

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

860244840 is a wasteful number, since it uses less digits than its factorization.

860244840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8793 (or 8783 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 860244840 is about 29329.9307875078. The cubic root of 860244840 is about 951.0587789203.

The spelling of 860244840 in words is "eight hundred sixty million, two hundred forty-four thousand, eight hundred forty".