2173250880 has 168 divisors, whose sum is σ = 7578208872. Its totient is φ = 571539456.

The previous prime is 2173250873. The next prime is 2173250897. The reversal of 2173250880 is 880523712.

2173250880 is a `hidden beast` number, since 2 + 1 + 73 + 2 + 508 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9884736 + 2163366144 = 3144^2 + 46512^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205072 + ... + 215408.

Almost surely, 2^2173250880 is an apocalyptic number.

2173250880 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 2173250880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3789104436).

2173250880 is an abundant number, since it is smaller than the sum of its proper divisors (5404957992).

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

2173250880 is a wasteful number, since it uses less digits than its factorization.

2173250880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10433 (or 10420 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2173250880 is about 46618.1389589932. The cubic root of 2173250880 is about 1295.2987747496.

The spelling of 2173250880 in words is "two billion, one hundred seventy-three million, two hundred fifty thousand, eight hundred eighty".