9540840 has 64 divisors (see below), whose sum is σ = 29304000. Its totient is φ = 2485056.

The previous prime is 9540829. The next prime is 9540847. The reversal of 9540840 is 480459.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 9540798 and 9540807.

It is not an unprimeable number, because it can be changed into a prime (9540847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221859 + ... + 221901.

It is an arithmetic number, because the mean of its divisors is an integer number (457875).

Almost surely, 2^9540840 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 9540840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14652000).

9540840 is an abundant number, since it is smaller than the sum of its proper divisors (19763160).

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

9540840 is an equidigital number, since it uses as much as digits as its factorization.

9540840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 9540840 is about 3088.8250193237. The cubic root of 9540840 is about 212.0942383924.

The spelling of 9540840 in words is "nine million, five hundred forty thousand, eight hundred forty".