12733540 has 24 divisors (see below), whose sum is σ = 26926200. Its totient is φ = 5058048.

The previous prime is 12733537. The next prime is 12733541. The reversal of 12733540 is 4533721.

It can be written as a sum of positive squares in 4 ways, for example, as 2916 + 12730624 = 54^2 + 3568^2 .

It is not an unprimeable number, because it can be changed into a prime (12733541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 5116.

It is an arithmetic number, because the mean of its divisors is an integer number (1121925).

Almost surely, 2^12733540 is an apocalyptic number.

12733540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12733540 is an abundant number, since it is smaller than the sum of its proper divisors (14192660).

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

12733540 is a wasteful number, since it uses less digits than its factorization.

12733540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 12733540 is about 3568.4086088900. The cubic root of 12733540 is about 233.5158617124.

The spelling of 12733540 in words is "twelve million, seven hundred thirty-three thousand, five hundred forty".