2303840728 has 32 divisors (see below), whose sum is σ = 4952712960. Its totient is φ = 984178080.

The previous prime is 2303840719. The next prime is 2303840743. The reversal of 2303840728 is 8270483032.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48726 + ... + 83557.

It is an arithmetic number, because the mean of its divisors is an integer number (154772280).

Almost surely, 2^2303840728 is an apocalyptic number.

2303840728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2303840728 is an abundant number, since it is smaller than the sum of its proper divisors (2648872232).

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

2303840728 is a wasteful number, since it uses less digits than its factorization.

2303840728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132607 (or 132603 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 2303840728 is about 47998.3408879932. The cubic root of 2303840728 is about 1320.7404645651.

The spelling of 2303840728 in words is "two billion, three hundred three million, eight hundred forty thousand, seven hundred twenty-eight".