28265005587 has 32 divisors (see below), whose sum is σ = 48824849920. Its totient is φ = 14124326400.

The previous prime is 28265005577. The next prime is 28265005589. The reversal of 28265005587 is 78550056282.

It is not a de Polignac number, because 28265005587 - 2¹⁵ = 28264972819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28265005589) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2719414 + ... + 2729787.

It is an arithmetic number, because the mean of its divisors is an integer number (1525776560).

Almost surely, 2^28265005587 is an apocalyptic number.

28265005587 is a deficient number, since it is larger than the sum of its proper divisors (20559844333).

28265005587 is a wasteful number, since it uses less digits than its factorization.

28265005587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449243.

The product of its (nonzero) digits is 1344000, while the sum is 48.

The spelling of 28265005587 in words is "twenty-eight billion, two hundred sixty-five million, five thousand, five hundred eighty-seven".