12780248 has 16 divisors (see below), whose sum is σ = 25806480. Its totient is φ = 5898528.

The previous prime is 12780247. The next prime is 12780263. The reversal of 12780248 is 84208721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780247) 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, 61340 + ... + 61547.

It is an arithmetic number, because the mean of its divisors is an integer number (1612905).

Almost surely, 2^12780248 is an apocalyptic number.

It is an amenable number.

12780248 is an abundant number, since it is smaller than the sum of its proper divisors (13026232).

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

12780248 is a wasteful number, since it uses less digits than its factorization.

12780248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122906 (or 122902 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 12780248 is about 3574.9472723384. The cubic root of 12780248 is about 233.8010337827.

Adding to 12780248 its reverse (84208721), we get a palindrome (96988969).

The spelling of 12780248 in words is "twelve million, seven hundred eighty thousand, two hundred forty-eight".