3891367272 has 128 divisors (see below), whose sum is σ = 10757577600. Its totient is φ = 1165612032.

The previous prime is 3891367267. The next prime is 3891367279. The reversal of 3891367272 is 2727631983.

It is not an unprimeable number, because it can be changed into a prime (3891367279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2297658 + ... + 2299350.

It is an arithmetic number, because the mean of its divisors is an integer number (84043575).

Almost surely, 2^3891367272 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 3891367272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5378788800).

3891367272 is an abundant number, since it is smaller than the sum of its proper divisors (6866210328).

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

3891367272 is a wasteful number, since it uses less digits than its factorization.

3891367272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907 (or 1903 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 3891367272 is about 62380.8245537040. The cubic root of 3891367272 is about 1572.8986535382.

The spelling of 3891367272 in words is "three billion, eight hundred ninety-one million, three hundred sixty-seven thousand, two hundred seventy-two".