9225840 has 80 divisors (see below), whose sum is σ = 30810528. Its totient is φ = 2270208.

The previous prime is 9225809. The next prime is 9225859. The reversal of 9225840 is 485229.

9225840 = 15² + 16² + ... + 302².

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

It is a super-2 number, since 2×9225840² = 170232247411200, 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 = 9225798 and 9225807.

It is a congruent number.

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, 1642 + ... + 4598.

Almost surely, 2^9225840 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 9225840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15405264).

9225840 is an abundant number, since it is smaller than the sum of its proper divisors (21584688).

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

9225840 is a wasteful number, since it uses less digits than its factorization.

9225840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986 (or 2980 counting only the distinct ones).

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

The square root of 9225840 is about 3037.4067886933. The cubic root of 9225840 is about 209.7339033269.

The spelling of 9225840 in words is "nine million, two hundred twenty-five thousand, eight hundred forty".