12533140 has 24 divisors (see below), whose sum is σ = 26461512. Its totient is φ = 4986240.

The previous prime is 12533123. The next prime is 12533149. The reversal of 12533140 is 4133521.

It can be written as a sum of positive squares in 4 ways, for example, as 1800964 + 10732176 = 1342^2 + 3276^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12533149) 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, 2350 + ... + 5530.

It is an arithmetic number, because the mean of its divisors is an integer number (1102563).

Almost surely, 2^12533140 is an apocalyptic number.

12533140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12533140 is an abundant number, since it is smaller than the sum of its proper divisors (13928372).

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

12533140 is a wasteful number, since it uses less digits than its factorization.

12533140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387 (or 3385 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12533140 is about 3540.2175074422. The cubic root of 12533140 is about 232.2843570353.

Adding to 12533140 its reverse (4133521), we get a palindrome (16666661).

The spelling of 12533140 in words is "twelve million, five hundred thirty-three thousand, one hundred forty".