2173729264 has 80 divisors (see below), whose sum is σ = 5034534912. Its totient is φ = 888966144.

The previous prime is 2173729253. The next prime is 2173729279. The reversal of 2173729264 is 4629273712.

It is a self number, because there is not a number n which added to its sum of digits gives 2173729264.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1526857 + ... + 1528279.

Almost surely, 2^2173729264 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 2173729264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2517267456).

2173729264 is an abundant number, since it is smaller than the sum of its proper divisors (2860805648).

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

2173729264 is a wasteful number, since it uses less digits than its factorization.

2173729264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054 (or 2048 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 2173729264 is about 46623.2695550194. The cubic root of 2173729264 is about 1295.3938097582.

The spelling of 2173729264 in words is "two billion, one hundred seventy-three million, seven hundred twenty-nine thousand, two hundred sixty-four".