28528060087 has 8 divisors (see below), whose sum is σ = 29301237296. Its totient is φ = 27754996032.

The previous prime is 28528060079. The next prime is 28528060109. The reversal of 28528060087 is 78006082582.

It is a happy number.

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 28528060087 - 2³ = 28528060079 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 (28528060027) 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, 832843 + ... + 866419.

It is an arithmetic number, because the mean of its divisors is an integer number (3662654662).

Almost surely, 2^28528060087 is an apocalyptic number.

28528060087 is a deficient number, since it is larger than the sum of its proper divisors (773177209).

28528060087 is a wasteful number, since it uses less digits than its factorization.

28528060087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56577.

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

The spelling of 28528060087 in words is "twenty-eight billion, five hundred twenty-eight million, sixty thousand, eighty-seven".