9287040 has 128 divisors (see below), whose sum is σ = 33880320. Its totient is φ = 2119680.

The previous prime is 9287027. The next prime is 9287041. The reversal of 9287040 is 407829.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×9287040² = 172498223923200, which contains 22 as substring.

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 = 9286989 and 9287007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9287041) 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, 13095 + ... + 13785.

It is an arithmetic number, because the mean of its divisors is an integer number (264690).

Almost surely, 2^9287040 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 9287040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16940160).

9287040 is an abundant number, since it is smaller than the sum of its proper divisors (24593280).

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

9287040 is a wasteful number, since it uses less digits than its factorization.

9287040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 9287040 is about 3047.4645198919. The cubic root of 9287040 is about 210.1966412071.

The spelling of 9287040 in words is "nine million, two hundred eighty-seven thousand, forty".