28985879455 has 8 divisors (see below), whose sum is σ = 37458675072. Its totient is φ = 21404957088.

The previous prime is 28985879449. The next prime is 28985879479. The reversal of 28985879455 is 55497858982.

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 28985879455 - 2⁷ = 28985879327 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222968239 + ... + 222968368.

It is an arithmetic number, because the mean of its divisors is an integer number (4682334384).

Almost surely, 2^28985879455 is an apocalyptic number.

28985879455 is a deficient number, since it is larger than the sum of its proper divisors (8472795617).

28985879455 is a wasteful number, since it uses less digits than its factorization.

28985879455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445936625.

The product of its digits is 290304000, while the sum is 70.

The spelling of 28985879455 in words is "twenty-eight billion, nine hundred eighty-five million, eight hundred seventy-nine thousand, four hundred fifty-five".