12728995 has 8 divisors (see below), whose sum is σ = 15503184. Its totient is φ = 10030944.

The previous prime is 12728987. The next prime is 12729029. The reversal of 12728995 is 59982721.

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 12728995 - 2³ = 12728987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 18664 + ... + 19333.

It is an arithmetic number, because the mean of its divisors is an integer number (1937898).

Almost surely, 2^12728995 is an apocalyptic number.

12728995 is a deficient number, since it is larger than the sum of its proper divisors (2774189).

12728995 is an equidigital number, since it uses as much as digits as its factorization.

12728995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38069.

The product of its digits is 90720, while the sum is 43.

The square root of 12728995 is about 3567.7717135489. The cubic root of 12728995 is about 233.4880753600.

The spelling of 12728995 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred ninety-five".