12751930 has 8 divisors (see below), whose sum is σ = 22953492. Its totient is φ = 5100768.

The previous prime is 12751927. The next prime is 12751931. The reversal of 12751930 is 3915721.

It can be written as a sum of positive squares in 2 ways, for example, as 11812969 + 938961 = 3437^2 + 969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12751930² = 325223437449800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12751931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637587 + ... + 637606.

Almost surely, 2^12751930 is an apocalyptic number.

12751930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12751930 is a deficient number, since it is larger than the sum of its proper divisors (10201562).

12751930 is a wasteful number, since it uses less digits than its factorization.

12751930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275200.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 12751930 is about 3570.9844581012. The cubic root of 12751930 is about 233.6282235282.

The spelling of 12751930 in words is "twelve million, seven hundred fifty-one thousand, nine hundred thirty".