12453240 has 64 divisors (see below), whose sum is σ = 37654560. Its totient is φ = 3294720.

The previous prime is 12453191. The next prime is 12453241. The reversal of 12453240 is 4235421.

12453240 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12453241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18510 + ... + 19170.

Almost surely, 2^12453240 is an apocalyptic number.

12453240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12453240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18827280).

12453240 is an abundant number, since it is smaller than the sum of its proper divisors (25201320).

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

12453240 is a wasteful number, since it uses less digits than its factorization.

12453240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12453240 is about 3528.9148473716. The cubic root of 12453240 is about 231.7896924900.

Adding to 12453240 its reverse (4235421), we get a palindrome (16688661).

The spelling of 12453240 in words is "twelve million, four hundred fifty-three thousand, two hundred forty".