9271072380 has 96 divisors (see below), whose sum is σ = 26510964480. Its totient is φ = 2420075520.

The previous prime is 9271072309. The next prime is 9271072387. The reversal of 9271072380 is 832701729.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9271072387) 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, 847707 + ... + 858573.

It is an arithmetic number, because the mean of its divisors is an integer number (276155880).

Almost surely, 2^9271072380 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 9271072380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13255482240).

9271072380 is an abundant number, since it is smaller than the sum of its proper divisors (17239892100).

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

9271072380 is a wasteful number, since it uses less digits than its factorization.

9271072380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11179 (or 11177 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 9271072380 is about 96286.4080750757. The cubic root of 9271072380 is about 2100.7610529546.

The spelling of 9271072380 in words is "nine billion, two hundred seventy-one million, seventy-two thousand, three hundred eighty".