2305642280 has 16 divisors (see below), whose sum is σ = 5187695220. Its totient is φ = 922256896.

The previous prime is 2305642279. The next prime is 2305642301. The reversal of 2305642280 is 822465032.

It can be written as a sum of positive squares in 2 ways, for example, as 2014393924 + 291248356 = 44882^2 + 17066^2 .

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, 28820489 + ... + 28820568.

Almost surely, 2^2305642280 is an apocalyptic number.

2305642280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2305642280 is an abundant number, since it is smaller than the sum of its proper divisors (2882052940).

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

2305642280 is a wasteful number, since it uses less digits than its factorization.

2305642280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57641068 (or 57641064 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2305642280 is about 48017.1040359579. The cubic root of 2305642280 is about 1321.0846380515.

The spelling of 2305642280 in words is "two billion, three hundred five million, six hundred forty-two thousand, two hundred eighty".