2820556260 has 36 divisors (see below), whose sum is σ = 8555687868. Its totient is φ = 752148288.

The previous prime is 2820556253. The next prime is 2820556303. The reversal of 2820556260 is 626550282.

2820556260 is a `hidden beast` number, since 2 + 8 + 20 + 5 + 5 + 626 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1232852544 + 1587703716 = 35112^2 + 39846^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7834699 + ... + 7835058.

Almost surely, 2^2820556260 is an apocalyptic number.

2820556260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820556260 is an abundant number, since it is smaller than the sum of its proper divisors (5735131608).

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

2820556260 is a wasteful number, since it uses less digits than its factorization.

2820556260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15669772 (or 15669767 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2820556260 is about 53108.9094220546. The cubic root of 2820556260 is about 1412.9005328744.

The spelling of 2820556260 in words is "two billion, eight hundred twenty million, five hundred fifty-six thousand, two hundred sixty".