28700488531 has 8 divisors (see below), whose sum is σ = 33718056624. Its totient is φ = 24084325920.

The previous prime is 28700488507. The next prime is 28700488549. The reversal of 28700488531 is 13588400782.

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 28700488531 - 2⁷ = 28700488403 is a prime.

It is a super-3 number, since 3×28700488531³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28700488591) 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, 100351216 + ... + 100351501.

It is an arithmetic number, because the mean of its divisors is an integer number (4214757078).

Almost surely, 2^28700488531 is an apocalyptic number.

28700488531 is a deficient number, since it is larger than the sum of its proper divisors (5017568093).

28700488531 is a wasteful number, since it uses less digits than its factorization.

28700488531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200702741.

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 28700488531 in words is "twenty-eight billion, seven hundred million, four hundred eighty-eight thousand, five hundred thirty-one".