12881897 has 8 divisors (see below), whose sum is σ = 15064896. Its totient is φ = 10784592.

The previous prime is 12881839. The next prime is 12881899. The reversal of 12881897 is 79818821.

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

It is a de Polignac number, because none of the positive numbers 2^k-12881897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12881899) 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 7 ways as a sum of consecutive naturals, for example, 21098 + ... + 21699.

It is an arithmetic number, because the mean of its divisors is an integer number (1883112).

Almost surely, 2^12881897 is an apocalyptic number.

It is an amenable number.

12881897 is a deficient number, since it is larger than the sum of its proper divisors (2182999).

12881897 is an equidigital number, since it uses as much as digits as its factorization.

12881897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42847.

The product of its digits is 64512, while the sum is 44.

The square root of 12881897 is about 3589.1359684470. The cubic root of 12881897 is about 234.4192510699.

The spelling of 12881897 in words is "twelve million, eight hundred eighty-one thousand, eight hundred ninety-seven".