3172215672 has 48 divisors (see below), whose sum is σ = 8603810280. Its totient is φ = 1055880000.

The previous prime is 3172215671. The next prime is 3172215677. The reversal of 3172215672 is 2765122713.

3172215672 is a `hidden beast` number, since 3 + 1 + 72 + 21 + 567 + 2 = 666.

3172215672 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3172215672³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172215671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19047 + ... + 81897.

Almost surely, 2^3172215672 is an apocalyptic number.

It is an amenable number.

3172215672 is an abundant number, since it is smaller than the sum of its proper divisors (5431594608).

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

3172215672 is a wasteful number, since it uses less digits than its factorization.

3172215672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63564 (or 63557 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 3172215672 is about 56322.4260130900. The cubic root of 3172215672 is about 1469.3352651884.

The spelling of 3172215672 in words is "three billion, one hundred seventy-two million, two hundred fifteen thousand, six hundred seventy-two".