2305802780 has 12 divisors (see below), whose sum is σ = 4842185880. Its totient is φ = 922321104.

The previous prime is 2305802771. The next prime is 2305802809. The reversal of 2305802780 is 872085032.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2305802780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57645050 + ... + 57645089.

It is an arithmetic number, because the mean of its divisors is an integer number (403515490).

Almost surely, 2^2305802780 is an apocalyptic number.

2305802780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2305802780 is an abundant number, since it is smaller than the sum of its proper divisors (2536383100).

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

2305802780 is a wasteful number, since it uses less digits than its factorization.

2305802780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115290148 (or 115290146 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 2305802780 is about 48018.7752863398. The cubic root of 2305802780 is about 1321.1152917174.

The spelling of 2305802780 in words is "two billion, three hundred five million, eight hundred two thousand, seven hundred eighty".