3172390720 has 28 divisors (see below), whose sum is σ = 7554256164. Its totient is φ = 1268956160.

The previous prime is 3172390717. The next prime is 3172390721. The reversal of 3172390720 is 270932713.

3172390720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1868314176 + 1304076544 = 43224^2 + 36112^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172390721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956541 + ... + 4957180.

It is an arithmetic number, because the mean of its divisors is an integer number (269794863).

Almost surely, 2^3172390720 is an apocalyptic number.

It is an amenable number.

3172390720 is an abundant number, since it is smaller than the sum of its proper divisors (4381865444).

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

3172390720 is an equidigital number, since it uses as much as digits as its factorization.

3172390720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913738 (or 9913728 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 3172390720 is about 56323.9799730097. The cubic root of 3172390720 is about 1469.3622914580.

The spelling of 3172390720 in words is "three billion, one hundred seventy-two million, three hundred ninety thousand, seven hundred twenty".