3232172720 has 80 divisors (see below), whose sum is σ = 8691943680. Its totient is φ = 1094806272.

The previous prime is 3232172711. The next prime is 3232172731. The reversal of 3232172720 is 272712323.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11711 + ... + 81249.

It is an arithmetic number, because the mean of its divisors is an integer number (108649296).

Almost surely, 2^3232172720 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 3232172720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4345971840).

3232172720 is an abundant number, since it is smaller than the sum of its proper divisors (5459770960).

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

3232172720 is a wasteful number, since it uses less digits than its factorization.

3232172720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69642 (or 69636 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 3232172720 is about 56852.2006610122. The cubic root of 3232172720 is about 1478.5346953286.

The spelling of 3232172720 in words is "three billion, two hundred thirty-two million, one hundred seventy-two thousand, seven hundred twenty".