12748769 has 8 divisors (see below), whose sum is σ = 14231712. Its totient is φ = 11319840.

The previous prime is 12748751. The next prime is 12748787. The reversal of 12748769 is 96784721.

It is an interprime number because it is at equal distance from previous prime (12748751) and next prime (12748787).

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

It is a cyclic number.

It is not a de Polignac number, because 12748769 - 2⁸ = 12748513 is a prime.

It is a super-2 number, since 2×12748769² = 325062222030722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12748369) 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 7 ways as a sum of consecutive naturals, for example, 13004 + ... + 13949.

It is an arithmetic number, because the mean of its divisors is an integer number (1778964).

Almost surely, 2^12748769 is an apocalyptic number.

It is an amenable number.

12748769 is a deficient number, since it is larger than the sum of its proper divisors (1482943).

12748769 is a wasteful number, since it uses less digits than its factorization.

12748769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27007.

The product of its digits is 169344, while the sum is 44.

The square root of 12748769 is about 3570.5418356322. The cubic root of 12748769 is about 233.6089176965.

Subtracting from 12748769 its sum of digits (44), we obtain a triangular number (12748725 = T₅₀₄₉).

The spelling of 12748769 in words is "twelve million, seven hundred forty-eight thousand, seven hundred sixty-nine".