2297280820 has 24 divisors (see below), whose sum is σ = 4990645800. Its totient is φ = 887225472.

The previous prime is 2297280803. The next prime is 2297280829. The reversal of 2297280820 is 280827922.

2297280820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 983073316 + 1314207504 = 31354^2 + 36252^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2297280829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979835 + ... + 1980994.

It is an arithmetic number, because the mean of its divisors is an integer number (207943575).

Almost surely, 2^2297280820 is an apocalyptic number.

2297280820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2297280820 is an abundant number, since it is smaller than the sum of its proper divisors (2693364980).

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

2297280820 is a wasteful number, since it uses less digits than its factorization.

2297280820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960867 (or 3960865 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 2297280820 is about 47929.9574379114. The cubic root of 2297280820 is about 1319.4857232922.

The spelling of 2297280820 in words is "two billion, two hundred ninety-seven million, two hundred eighty thousand, eight hundred twenty".