9540240 has 80 divisors (see below), whose sum is σ = 29902848. Its totient is φ = 2515968.

The previous prime is 9540203. The next prime is 9540253. The reversal of 9540240 is 420459.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9540240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30324 + ... + 30636.

Almost surely, 2^9540240 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 9540240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14951424).

9540240 is an abundant number, since it is smaller than the sum of its proper divisors (20362608).

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

9540240 is a wasteful number, since it uses less digits than its factorization.

9540240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 9540240 is about 3088.7278934862. The cubic root of 9540240 is about 212.0897922706.

Adding to 9540240 its reverse (420459), we get a palindrome (9960699).

The spelling of 9540240 in words is "nine million, five hundred forty thousand, two hundred forty".