28913928559 has 8 divisors (see below), whose sum is σ = 30911980320. Its totient is φ = 26948902656.

The previous prime is 28913928541. The next prime is 28913928577. The reversal of 28913928559 is 95582931982.

It is an interprime number because it is at equal distance from previous prime (28913928541) and next prime (28913928577).

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

It is not a de Polignac number, because 28913928559 - 2⁷ = 28913928431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28913928497 and 28913928506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913928539) 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, 8254654 + ... + 8258155.

It is an arithmetic number, because the mean of its divisors is an integer number (3863997540).

Almost surely, 2^28913928559 is an apocalyptic number.

28913928559 is a deficient number, since it is larger than the sum of its proper divisors (1998051761).

28913928559 is a wasteful number, since it uses less digits than its factorization.

28913928559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16512929.

The product of its digits is 13996800, while the sum is 61.

The spelling of 28913928559 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred twenty-eight thousand, five hundred fifty-nine".