12780481 has 16 divisors (see below), whose sum is σ = 15569280. Its totient is φ = 10241280.

The previous prime is 12780409. The next prime is 12780511. The reversal of 12780481 is 18408721.

12780481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12780481 - 2⁹ = 12779969 is a prime.

It is a super-2 number, since 2×12780481² = 326681389182722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12780181) 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, 24855 + ... + 25363.

It is an arithmetic number, because the mean of its divisors is an integer number (973080).

Almost surely, 2^12780481 is an apocalyptic number.

It is an amenable number.

12780481 is a deficient number, since it is larger than the sum of its proper divisors (2788799).

12780481 is a wasteful number, since it uses less digits than its factorization.

12780481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12780481 is about 3574.9798600831. The cubic root of 12780481 is about 233.8024546030.

It can be divided in two parts, 127 and 80481, that added together give a palindrome (80608).

The spelling of 12780481 in words is "twelve million, seven hundred eighty thousand, four hundred eighty-one".