9220240 has 40 divisors (see below), whose sum is σ = 22373568. Its totient is φ = 3527040.

The previous prime is 9220219. The next prime is 9220241. The reversal of 9220240 is 420229.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9220241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666 + ... + 4345.

Almost surely, 2^9220240 is an apocalyptic number.

It is an amenable number.

9220240 is an abundant number, since it is smaller than the sum of its proper divisors (13153328).

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

9220240 is a wasteful number, since it uses less digits than its factorization.

9220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047 (or 5041 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 9220240 is about 3036.4848097759. The cubic root of 9220240 is about 209.6914592215.

Adding to 9220240 its reverse (420229), we get a palindrome (9640469).

The spelling of 9220240 in words is "nine million, two hundred twenty thousand, two hundred forty".