28536722417 has 8 divisors (see below), whose sum is σ = 32616567936. Its totient is φ = 24457669632.

The previous prime is 28536722407. The next prime is 28536722491. The reversal of 28536722417 is 71422763582.

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 28536722417 - 2⁶ = 28536722353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28536722407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118928 + ... + 266865.

It is an arithmetic number, because the mean of its divisors is an integer number (4077070992).

Almost surely, 2^28536722417 is an apocalyptic number.

It is an amenable number.

28536722417 is a deficient number, since it is larger than the sum of its proper divisors (4079845519).

28536722417 is a wasteful number, since it uses less digits than its factorization.

28536722417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396367.

The product of its digits is 1128960, while the sum is 47.

The spelling of 28536722417 in words is "twenty-eight billion, five hundred thirty-six million, seven hundred twenty-two thousand, four hundred seventeen".