12781485 has 24 divisors (see below), whose sum is σ = 22239360. Its totient is φ = 6790752.

The previous prime is 12781459. The next prime is 12781487. The reversal of 12781485 is 58418721.

12781485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12781485 - 2⁵ = 12781453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19432 + ... + 20078.

It is an arithmetic number, because the mean of its divisors is an integer number (926640).

Almost surely, 2^12781485 is an apocalyptic number.

12781485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12781485 is a deficient number, since it is larger than the sum of its proper divisors (9457875).

12781485 is a wasteful number, since it uses less digits than its factorization.

12781485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1094 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12781485 is about 3575.1202776970. The cubic root of 12781485 is about 233.8085767388.

The spelling of 12781485 in words is "twelve million, seven hundred eighty-one thousand, four hundred eighty-five".