8642723850 has 72 divisors (see below), whose sum is σ = 23260386240. Its totient is φ = 2300729760.

The previous prime is 8642723809. The next prime is 8642723941. The reversal of 8642723850 is 583272468.

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

It is a junction number, because it is equal to n+sod(n) for n = 8642723796 and 8642723805.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247791 + ... + 280509.

It is an arithmetic number, because the mean of its divisors is an integer number (323060920).

Almost surely, 2^8642723850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8642723850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11630193120).

8642723850 is an abundant number, since it is smaller than the sum of its proper divisors (14617662390).

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

8642723850 is a wasteful number, since it uses less digits than its factorization.

8642723850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33324 (or 33316 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 8642723850 is about 92966.2511344843. The cubic root of 8642723850 is about 2052.1867484474.

The spelling of 8642723850 in words is "eight billion, six hundred forty-two million, seven hundred twenty-three thousand, eight hundred fifty".