12554240 has 52 divisors (see below), whose sum is σ = 30175644. Its totient is φ = 5013504.

The previous prime is 12554233. The next prime is 12554249. The reversal of 12554240 is 4245521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 11075584 = 1216^2 + 3328^2 .

It is not an unprimeable number, because it can be changed into a prime (12554249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20174 + ... + 20786.

Almost surely, 2^12554240 is an apocalyptic number.

12554240 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 12554240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15087822).

12554240 is an abundant number, since it is smaller than the sum of its proper divisors (17621404).

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

12554240 is an frugal number, since it uses more digits than its factorization.

12554240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12554240 is about 3543.1962971306. The cubic root of 12554240 is about 232.4146370250.

Adding to 12554240 its reverse (4245521), we get a palindrome (16799761).

The spelling of 12554240 in words is "twelve million, five hundred fifty-four thousand, two hundred forty".