2187100880 has 80 divisors (see below), whose sum is σ = 5145099264. Its totient is φ = 864568320.

The previous prime is 2187100841. The next prime is 2187100891. The reversal of 2187100880 is 880017812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2187100880.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4723529 + ... + 4723991.

Almost surely, 2^2187100880 is an apocalyptic number.

2187100880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2187100880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572549632).

2187100880 is an abundant number, since it is smaller than the sum of its proper divisors (2957998384).

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

2187100880 is a wasteful number, since it uses less digits than its factorization.

2187100880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 35.

The square root of 2187100880 is about 46766.4503677583. The cubic root of 2187100880 is about 1298.0445710132.

The spelling of 2187100880 in words is "two billion, one hundred eighty-seven million, one hundred thousand, eight hundred eighty".