9381840 has 160 divisors (see below), whose sum is σ = 32664576. Its totient is φ = 2211840.

The previous prime is 9381821. The next prime is 9381859. The reversal of 9381840 is 481839.

9381840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9381821) and next prime (9381859).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96672 + ... + 96768.

Almost surely, 2^9381840 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 9381840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16332288).

9381840 is an abundant number, since it is smaller than the sum of its proper divisors (23282736).

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

9381840 is a wasteful number, since it uses less digits than its factorization.

9381840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 9381840 is about 3062.9789421411. The cubic root of 9381840 is about 210.9094345651.

The spelling of 9381840 in words is "nine million, three hundred eighty-one thousand, eight hundred forty".