28572370887 has 8 divisors (see below), whose sum is σ = 38446004080. Its totient is φ = 18873492480.

The previous prime is 28572370837. The next prime is 28572370919. The reversal of 28572370887 is 78807327582.

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

It is not a de Polignac number, because 28572370887 - 2⁶ = 28572370823 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 (28572370837) 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, 43688314 + ... + 43688967.

It is an arithmetic number, because the mean of its divisors is an integer number (4805750510).

Almost surely, 2^28572370887 is an apocalyptic number.

28572370887 is a deficient number, since it is larger than the sum of its proper divisors (9873633193).

28572370887 is a wasteful number, since it uses less digits than its factorization.

28572370887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87377393.

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 28572370887 in words is "twenty-eight billion, five hundred seventy-two million, three hundred seventy thousand, eight hundred eighty-seven".