12928569 has 8 divisors (see below), whose sum is σ = 18145440. Its totient is φ = 8165376.

The previous prime is 12928567. The next prime is 12928579. The reversal of 12928569 is 96582921.

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

It is not a de Polignac number, because 12928569 - 2¹ = 12928567 is a prime.

It is a super-2 number, since 2×12928569² = 334295792775522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12928569.

It is not an unprimeable number, because it can be changed into a prime (12928561) 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, 113352 + ... + 113465.

It is an arithmetic number, because the mean of its divisors is an integer number (2268180).

Almost surely, 2^12928569 is an apocalyptic number.

12928569 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12928569 is a deficient number, since it is larger than the sum of its proper divisors (5216871).

12928569 is a wasteful number, since it uses less digits than its factorization.

12928569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226839.

The product of its digits is 77760, while the sum is 42.

The square root of 12928569 is about 3595.6319333324. The cubic root of 12928569 is about 234.7020155496.

The spelling of 12928569 in words is "twelve million, nine hundred twenty-eight thousand, five hundred sixty-nine".