2318089728 has 160 divisors (see below), whose sum is σ = 6458158080. Its totient is φ = 738017280.

The previous prime is 2318089703. The next prime is 2318089747. The reversal of 2318089728 is 8279808132.

It is a super-2 number, since 2×2318089728² = 10747079974118227968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4237551 + ... + 4238097.

It is an arithmetic number, because the mean of its divisors is an integer number (40363488).

Almost surely, 2^2318089728 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 2318089728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3229079040).

2318089728 is an abundant number, since it is smaller than the sum of its proper divisors (4140068352).

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

2318089728 is an equidigital number, since it uses as much as digits as its factorization.

2318089728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 2318089728 is about 48146.5442996691. The cubic root of 2318089728 is about 1323.4577480893.

The spelling of 2318089728 in words is "two billion, three hundred eighteen million, eighty-nine thousand, seven hundred twenty-eight".