8133540 has 24 divisors (see below), whose sum is σ = 22774080. Its totient is φ = 2168928.

The previous prime is 8133533. The next prime is 8133569. The reversal of 8133540 is 453318.

8133540 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 8133540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67720 + ... + 67839.

It is an arithmetic number, because the mean of its divisors is an integer number (948920).

Almost surely, 2^8133540 is an apocalyptic number.

It is an amenable number.

8133540 is an abundant number, since it is smaller than the sum of its proper divisors (14640540).

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

8133540 is a wasteful number, since it uses less digits than its factorization.

8133540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135571 (or 135569 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 8133540 is about 2851.9361844193. The cubic root of 8133540 is about 201.1066981340.

Adding to 8133540 its reverse (453318), we get a palindrome (8586858).

The spelling of 8133540 in words is "eight million, one hundred thirty-three thousand, five hundred forty".