9213540 has 48 divisors (see below), whose sum is σ = 29484672. Its totient is φ = 2105856.

The previous prime is 9213527. The next prime is 9213559. The reversal of 9213540 is 453129.

It is a self number, because there is not a number n which added to its sum of digits gives 9213540.

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, 10549 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (614264).

Almost surely, 2^9213540 is an apocalyptic number.

It is an amenable number.

9213540 is an abundant number, since it is smaller than the sum of its proper divisors (20271132).

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

9213540 is a wasteful number, since it uses less digits than its factorization.

9213540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21956 (or 21954 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 9213540 is about 3035.3813598953. The cubic root of 9213540 is about 209.6406552938.

Adding to 9213540 its reverse (453129), we get a palindrome (9666669).

The spelling of 9213540 in words is "nine million, two hundred thirteen thousand, five hundred forty".