12751880 has 32 divisors (see below), whose sum is σ = 29683800. Its totient is φ = 4924416.

The previous prime is 12751877. The next prime is 12751883. The reversal of 12751880 is 8815721.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12751877) and next prime (12751883).

It can be written as a sum of positive squares in 4 ways, for example, as 8282884 + 4468996 = 2878^2 + 2114^2 .

It is a super-2 number, since 2×12751880² = 325220887068800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4337 + ... + 6656.

Almost surely, 2^12751880 is an apocalyptic number.

12751880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12751880 is an abundant number, since it is smaller than the sum of its proper divisors (16931920).

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

12751880 is a wasteful number, since it uses less digits than its factorization.

12751880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11033 (or 11029 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 12751880 is about 3570.9774572237. The cubic root of 12751880 is about 233.6279181776.

It can be divided in two parts, 12751 and 880, that added together give a palindrome (13631).

The spelling of 12751880 in words is "twelve million, seven hundred fifty-one thousand, eight hundred eighty".