2173973056 has 56 divisors (see below), whose sum is σ = 4576069080. Its totient is φ = 1021181952.

The previous prime is 2173973029. The next prime is 2173973071. The reversal of 2173973056 is 6503793712.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21013056 + 2152960000 = 4584^2 + 46400^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730740 + ... + 733708.

Almost surely, 2^2173973056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2173973056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2288034540).

2173973056 is an abundant number, since it is smaller than the sum of its proper divisors (2402096024).

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

2173973056 is a wasteful number, since it uses less digits than its factorization.

2173973056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671 (or 3661 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 2173973056 is about 46625.8839701726. The cubic root of 2173973056 is about 1295.4422357279.

The spelling of 2173973056 in words is "two billion, one hundred seventy-three million, nine hundred seventy-three thousand, fifty-six".