12751280 has 40 divisors (see below), whose sum is σ = 31210800. Its totient is φ = 4831488.

The previous prime is 12751253. The next prime is 12751283. The reversal of 12751280 is 8215721.

12751280 = 199² + 200² + ... + 358².

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (12751283) 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, 2675 + ... + 5714.

It is an arithmetic number, because the mean of its divisors is an integer number (780270).

Almost surely, 2^12751280 is an apocalyptic number.

12751280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12751280 is an abundant number, since it is smaller than the sum of its proper divisors (18459520).

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

12751280 is a wasteful number, since it uses less digits than its factorization.

12751280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8421 (or 8415 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 12751280 is about 3570.8934456239. The cubic root of 12751280 is about 233.6242539088.

It can be divided in two parts, 12751 and 280, that added together give a palindrome (13031).

The spelling of 12751280 in words is "twelve million, seven hundred fifty-one thousand, two hundred eighty".