2169960720 has 80 divisors (see below), whose sum is σ = 6731354880. Its totient is φ = 578271232.

The previous prime is 2169960701. The next prime is 2169960743. The reversal of 2169960720 is 270699612.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700936 + ... + 704024.

It is an arithmetic number, because the mean of its divisors is an integer number (84141936).

Almost surely, 2^2169960720 is an apocalyptic number.

2169960720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2169960720 is an abundant number, since it is smaller than the sum of its proper divisors (4561394160).

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

2169960720 is a wasteful number, since it uses less digits than its factorization.

2169960720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032 (or 6026 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 2169960720 is about 46582.8371828080. The cubic root of 2169960720 is about 1294.6447786660.

The spelling of 2169960720 in words is "two billion, one hundred sixty-nine million, nine hundred sixty thousand, seven hundred twenty".