9272840 has 16 divisors (see below), whose sum is σ = 20863980. Its totient is φ = 3709120.

The previous prime is 9272833. The next prime is 9272849. The reversal of 9272840 is 482729.

It can be written as a sum of positive squares in 2 ways, for example, as 7941124 + 1331716 = 2818^2 + 1154^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9272797 and 9272806.

It is not an unprimeable number, because it can be changed into a prime (9272849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115871 + ... + 115950.

Almost surely, 2^9272840 is an apocalyptic number.

It is an amenable number.

9272840 is an abundant number, since it is smaller than the sum of its proper divisors (11591140).

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

9272840 is a wasteful number, since it uses less digits than its factorization.

9272840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231832 (or 231828 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 9272840 is about 3045.1338230035. The cubic root of 9272840 is about 210.0894554637.

The spelling of 9272840 in words is "nine million, two hundred seventy-two thousand, eight hundred forty".