28317046557 has 8 divisors (see below), whose sum is σ = 39977006976. Its totient is φ = 17767558592.

The previous prime is 28317046547. The next prime is 28317046561. The reversal of 28317046557 is 75564071382.

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 28317046557 - 2⁶ = 28317046493 is a prime.

It is a super-2 number, since 2×28317046557² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28317046547) 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, 277618053 + ... + 277618154.

It is an arithmetic number, because the mean of its divisors is an integer number (4997125872).

Almost surely, 2^28317046557 is an apocalyptic number.

It is an amenable number.

28317046557 is a deficient number, since it is larger than the sum of its proper divisors (11659960419).

28317046557 is a wasteful number, since it uses less digits than its factorization.

28317046557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555236227.

The product of its (nonzero) digits is 1411200, while the sum is 48.

The spelling of 28317046557 in words is "twenty-eight billion, three hundred seventeen million, forty-six thousand, five hundred fifty-seven".