12750381 has 12 divisors (see below), whose sum is σ = 21048352. Its totient is φ = 7285896.

The previous prime is 12750379. The next prime is 12750383. The reversal of 12750381 is 18305721.

It is an interprime number because it is at equal distance from previous prime (12750379) and next prime (12750383).

It is not a de Polignac number, because 12750381 - 2¹ = 12750379 is a prime.

It is a super-2 number, since 2×12750381² = 325144431290322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12750383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101131 + ... + 101256.

Almost surely, 2^12750381 is an apocalyptic number.

It is an amenable number.

12750381 is a deficient number, since it is larger than the sum of its proper divisors (8297971).

12750381 is a wasteful number, since it uses less digits than its factorization.

12750381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202400 (or 202397 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 12750381 is about 3570.7675645441. The cubic root of 12750381 is about 233.6187633975.

It can be divided in two parts, 12750 and 381, that added together give a palindrome (13131).

The spelling of 12750381 in words is "twelve million, seven hundred fifty thousand, three hundred eighty-one".