12774820 has 24 divisors (see below), whose sum is σ = 28405944. Its totient is φ = 4809216.

The previous prime is 12774787. The next prime is 12774829. The reversal of 12774820 is 2847721.

12774820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6180196 + 6594624 = 2486^2 + 2568^2 .

It is not an unprimeable number, because it can be changed into a prime (12774829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18447 + ... + 19126.

It is an arithmetic number, because the mean of its divisors is an integer number (1183581).

Almost surely, 2^12774820 is an apocalyptic number.

12774820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12774820 is an abundant number, since it is smaller than the sum of its proper divisors (15631124).

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

12774820 is a wasteful number, since it uses less digits than its factorization.

12774820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37599 (or 37597 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 12774820 is about 3574.1880196766. The cubic root of 12774820 is about 233.7679292681.

It can be divided in two parts, 127 and 74820, that added together give a palindrome (74947).

The spelling of 12774820 in words is "twelve million, seven hundred seventy-four thousand, eight hundred twenty".