28600026565 has 8 divisors (see below), whose sum is σ = 37440034848. Its totient is φ = 20800019280.

The previous prime is 28600026529. The next prime is 28600026613. The reversal of 28600026565 is 56562000682.

It is a happy number.

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

It is not a de Polignac number, because 28600026565 - 2⁹ = 28600026053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260000187 + ... + 260000296.

It is an arithmetic number, because the mean of its divisors is an integer number (4680004356).

Almost surely, 2^28600026565 is an apocalyptic number.

It is an amenable number.

28600026565 is a deficient number, since it is larger than the sum of its proper divisors (8840008283).

28600026565 is a wasteful number, since it uses less digits than its factorization.

28600026565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520000499.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 28600026565 in words is "twenty-eight billion, six hundred million, twenty-six thousand, five hundred sixty-five".