12730751 has 4 divisors (see below), whose sum is σ = 13888104. Its totient is φ = 11573400.

The previous prime is 12730733. The next prime is 12730777. The reversal of 12730751 is 15703721.

12730751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12730751 - 2⁶ = 12730687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12730751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730051) 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, 578660 + ... + 578681.

It is an arithmetic number, because the mean of its divisors is an integer number (3472026).

Almost surely, 2^12730751 is an apocalyptic number.

12730751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12730751 is a deficient number, since it is larger than the sum of its proper divisors (1157353).

12730751 is a wasteful number, since it uses less digits than its factorization.

12730751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157352.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 12730751 is about 3568.0177970408. The cubic root of 12730751 is about 233.4988116412.

The spelling of 12730751 in words is "twelve million, seven hundred thirty thousand, seven hundred fifty-one".