864122224 has 80 divisors (see below), whose sum is σ = 1955430400. Its totient is φ = 362299392.

The previous prime is 864122221. The next prime is 864122293. The reversal of 864122224 is 422221468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864122221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123312 + ... + 1124080.

It is an arithmetic number, because the mean of its divisors is an integer number (24442880).

Almost surely, 2^864122224 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 864122224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977715200).

864122224 is an abundant number, since it is smaller than the sum of its proper divisors (1091308176).

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

864122224 is a wasteful number, since it uses less digits than its factorization.

864122224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 984 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 864122224 is about 29395.9559123360. The cubic root of 864122224 is about 952.4855407546.

The spelling of 864122224 in words is "eight hundred sixty-four million, one hundred twenty-two thousand, two hundred twenty-four".