2173210560 has 140 divisors (see below), whose sum is σ = 7730584488. Its totient is φ = 579515904.

The previous prime is 2173210549. The next prime is 2173210561. The reversal of 2173210560 is 650123712.

It is a happy number.

2173210560 is a `hidden beast` number, since 21 + 73 + 2 + 10 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173210561) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 16002 + ... + 67841.

Almost surely, 2^2173210560 is an apocalyptic number.

2173210560 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 2173210560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3865292244).

2173210560 is an abundant number, since it is smaller than the sum of its proper divisors (5557373928).

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

2173210560 is an equidigital number, since it uses as much as digits as its factorization.

2173210560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83872 (or 83853 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 2173210560 is about 46617.7065072918. The cubic root of 2173210560 is about 1295.2907642050.

The spelling of 2173210560 in words is "two billion, one hundred seventy-three million, two hundred ten thousand, five hundred sixty".