9012240 has 60 divisors (see below), whose sum is σ = 30268524. Its totient is φ = 2403072.

The previous prime is 9012239. The next prime is 9012247. The reversal of 9012240 is 422109.

It can be written as a sum of positive squares in 2 ways, for example, as 6230016 + 2782224 = 2496^2 + 1668^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (9012247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5539 + ... + 6978.

Almost surely, 2^9012240 is an apocalyptic number.

9012240 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9012240 is an abundant number, since it is smaller than the sum of its proper divisors (21256284).

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

9012240 is a wasteful number, since it uses less digits than its factorization.

9012240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536 (or 12527 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 9012240 is about 3002.0393068712. The cubic root of 9012240 is about 208.1026367227.

Adding to 9012240 its reverse (422109), we get a palindrome (9434349).

The spelling of 9012240 in words is "nine million, twelve thousand, two hundred forty".