12750981 has 8 divisors (see below), whose sum is σ = 17587680. Its totient is φ = 8207472.

The previous prime is 12750911. The next prime is 12750989. The reversal of 12750981 is 18905721.

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

It is not a de Polignac number, because 12750981 - 2⁹ = 12750469 is a prime.

It is a super-2 number, since 2×12750981² = 325175032924722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750989) 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, 73195 + ... + 73368.

It is an arithmetic number, because the mean of its divisors is an integer number (2198460).

Almost surely, 2^12750981 is an apocalyptic number.

It is an amenable number.

12750981 is a deficient number, since it is larger than the sum of its proper divisors (4836699).

12750981 is a wasteful number, since it uses less digits than its factorization.

12750981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146595.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 12750981 is about 3570.8515791055. The cubic root of 12750981 is about 233.6224278386.

It can be divided in two parts, 12750 and 981, that added together give a palindrome (13731).

The spelling of 12750981 in words is "twelve million, seven hundred fifty thousand, nine hundred eighty-one".