9136840 has 16 divisors (see below), whose sum is σ = 20557980. Its totient is φ = 3654720.

The previous prime is 9136823. The next prime is 9136843. The reversal of 9136840 is 486319.

It can be written as a sum of positive squares in 2 ways, for example, as 9132484 + 4356 = 3022^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (9136843) 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, 114171 + ... + 114250.

Almost surely, 2^9136840 is an apocalyptic number.

It is an amenable number.

9136840 is an abundant number, since it is smaller than the sum of its proper divisors (11421140).

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

9136840 is a wasteful number, since it uses less digits than its factorization.

9136840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228432 (or 228428 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 9136840 is about 3022.7206288375. The cubic root of 9136840 is about 209.0573013522.

The spelling of 9136840 in words is "nine million, one hundred thirty-six thousand, eight hundred forty".