28528722487 has 8 divisors (see below), whose sum is σ = 28721864672. Its totient is φ = 28335636000.

The previous prime is 28528722457. The next prime is 28528722511. The reversal of 28528722487 is 78422782582.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28528722487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28528722437) by changing a digit.

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, 1827937 + ... + 1843477.

It is an arithmetic number, because the mean of its divisors is an integer number (3590233084).

Almost surely, 2^28528722487 is an apocalyptic number.

28528722487 is a deficient number, since it is larger than the sum of its proper divisors (193142185).

28528722487 is a wasteful number, since it uses less digits than its factorization.

28528722487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27849.

The product of its digits is 8028160, while the sum is 55.

The spelling of 28528722487 in words is "twenty-eight billion, five hundred twenty-eight million, seven hundred twenty-two thousand, four hundred eighty-seven".