2173987200 has 768 divisors, whose sum is σ = 9507248640. Its totient is φ = 422707200.

The previous prime is 2173987181. The next prime is 2173987223. The reversal of 2173987200 is 27893712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12566314 + ... + 12566486.

It is an arithmetic number, because the mean of its divisors is an integer number (12379230).

Almost surely, 2^2173987200 is an apocalyptic number.

2173987200 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 2173987200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4753624320).

2173987200 is an abundant number, since it is smaller than the sum of its proper divisors (7333261440).

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

2173987200 is a wasteful number, since it uses less digits than its factorization.

2173987200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 2173987200 is about 46626.0356453345. The cubic root of 2173987200 is about 1295.4450451303.

The spelling of 2173987200 in words is "two billion, one hundred seventy-three million, nine hundred eighty-seven thousand, two hundred".