818283720 has 128 divisors (see below), whose sum is σ = 2571004800. Its totient is φ = 208072704.

The previous prime is 818283709. The next prime is 818283727. The reversal of 818283720 is 27382818.

It is not an unprimeable number, because it can be changed into a prime (818283727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287424 + ... + 290256.

It is an arithmetic number, because the mean of its divisors is an integer number (20085975).

Almost surely, 2^818283720 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 818283720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285502400).

818283720 is an abundant number, since it is smaller than the sum of its proper divisors (1752721080).

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

818283720 is a wasteful number, since it uses less digits than its factorization.

818283720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959 (or 2955 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 818283720 is about 28605.6588807180. The cubic root of 818283720 is about 935.3366894440.

The spelling of 818283720 in words is "eight hundred eighteen million, two hundred eighty-three thousand, seven hundred twenty".