2316391728 has 40 divisors (see below), whose sum is σ = 6838871808. Its totient is φ = 661826112.

The previous prime is 2316391723. The next prime is 2316391739. The reversal of 2316391728 is 8271936132.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2316391728.

It is not an unprimeable number, because it can be changed into a prime (2316391723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3446676 + ... + 3447347.

Almost surely, 2^2316391728 is an apocalyptic number.

2316391728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2316391728 is an abundant number, since it is smaller than the sum of its proper divisors (4522480080).

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

2316391728 is a wasteful number, since it uses less digits than its factorization.

2316391728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894041 (or 6894035 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 2316391728 is about 48128.9074050097. The cubic root of 2316391728 is about 1323.1345250275.

The spelling of 2316391728 in words is "two billion, three hundred sixteen million, three hundred ninety-one thousand, seven hundred twenty-eight".