2820860222080 has 64 divisors (see below), whose sum is σ = 7140302464680. Its totient is φ = 1061970903040.

The previous prime is 2820860222021. The next prime is 2820860222087. The reversal of 2820860222080 is 802220680282.

It can be written as a sum of positive squares in 4 ways, for example, as 2753555259456 + 67304962624 = 1659384^2 + 259432^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (2820860222087) 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, 129624241 + ... + 129646000.

Almost surely, 2^{2820860222080} is an apocalyptic number.

2820860222080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2820860222080 is an abundant number, since it is smaller than the sum of its proper divisors (4319442242600).

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

2820860222080 is a wasteful number, since it uses less digits than its factorization.

2820860222080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259270277 (or 259270265 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 2820860222080 in words is "two trillion, eight hundred twenty billion, eight hundred sixty million, two hundred twenty-two thousand, eighty".