12253540 has 24 divisors (see below), whose sum is σ = 27712440. Its totient is φ = 4524288.

The previous prime is 12253531. The next prime is 12253543. The reversal of 12253540 is 4535221.

It can be written as a sum of positive squares in 4 ways, for example, as 788544 + 11464996 = 888^2 + 3386^2 .

It is not an unprimeable number, because it can be changed into a prime (12253543) 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, 23305 + ... + 23824.

It is an arithmetic number, because the mean of its divisors is an integer number (1154685).

Almost surely, 2^12253540 is an apocalyptic number.

12253540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12253540 is an abundant number, since it is smaller than the sum of its proper divisors (15458900).

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

12253540 is a wasteful number, since it uses less digits than its factorization.

12253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47151 (or 47149 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 12253540 is about 3500.5056777557. The cubic root of 12253540 is about 230.5440178309.

Adding to 12253540 its reverse (4535221), we get a palindrome (16788761).

The spelling of 12253540 in words is "twelve million, two hundred fifty-three thousand, five hundred forty".