12897495 has 32 divisors (see below), whose sum is σ = 24696000. Its totient is φ = 6348672.

The previous prime is 12897491. The next prime is 12897499. The reversal of 12897495 is 59479821.

It is an interprime number because it is at equal distance from previous prime (12897491) and next prime (12897499).

It is not a de Polignac number, because 12897495 - 2² = 12897491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12897495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1920 + ... + 5429.

It is an arithmetic number, because the mean of its divisors is an integer number (771750).

Almost surely, 2^12897495 is an apocalyptic number.

12897495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12897495 is a deficient number, since it is larger than the sum of its proper divisors (11798505).

12897495 is a wasteful number, since it uses less digits than its factorization.

12897495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7376 (or 7370 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 12897495 is about 3591.3082574460. The cubic root of 12897495 is about 234.5138281512.

The spelling of 12897495 in words is "twelve million, eight hundred ninety-seven thousand, four hundred ninety-five".