12776280 has 64 divisors (see below), whose sum is σ = 41817600. Its totient is φ = 3096960.

The previous prime is 12776263. The next prime is 12776287. The reversal of 12776280 is 8267721.

12776280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776287) 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, 3520 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (653400).

Almost surely, 2^12776280 is an apocalyptic number.

12776280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12776280 is an abundant number, since it is smaller than the sum of its proper divisors (29041320).

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

12776280 is a wasteful number, since it uses less digits than its factorization.

12776280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704 (or 9700 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 12776280 is about 3574.3922560346. The cubic root of 12776280 is about 233.7768344992.

It can be divided in two parts, 1277 and 6280, that added together give a palindrome (7557).

The spelling of 12776280 in words is "twelve million, seven hundred seventy-six thousand, two hundred eighty".