28867598956 has 24 divisors (see below), whose sum is σ = 57739544576. Its totient is φ = 12370896720.

The previous prime is 28867598933. The next prime is 28867598959. The reversal of 28867598956 is 65989576882.

It is not an unprimeable number, because it can be changed into a prime (28867598959) 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, 446005 + ... + 506611.

Almost surely, 2^28867598956 is an apocalyptic number.

It is an amenable number.

28867598956 is an abundant number, since it is smaller than the sum of its proper divisors (28871945620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28867598956 is a wasteful number, since it uses less digits than its factorization.

28867598956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77629 (or 77627 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 73.

The spelling of 28867598956 in words is "twenty-eight billion, eight hundred sixty-seven million, five hundred ninety-eight thousand, nine hundred fifty-six".