2097800020 has 24 divisors (see below), whose sum is σ = 4406298624. Its totient is φ = 838945056.

The previous prime is 2097799969. The next prime is 2097800041. The reversal of 2097800020 is 200087902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134677 + ... + 149443.

It is an arithmetic number, because the mean of its divisors is an integer number (183595776).

Almost surely, 2^2097800020 is an apocalyptic number.

2097800020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2097800020 is an abundant number, since it is smaller than the sum of its proper divisors (2308498604).

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

2097800020 is a wasteful number, since it uses less digits than its factorization.

2097800020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21879 (or 21877 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2097800020 is about 45801.7469099160. The cubic root of 2097800020 is about 1280.1318264293.

Adding to 2097800020 its reverse (200087902), we get a palindrome (2297887922).

The spelling of 2097800020 in words is "two billion, ninety-seven million, eight hundred thousand, twenty".