28578179808 has 96 divisors (see below), whose sum is σ = 86041912320. Its totient is φ = 9218759040.

The previous prime is 28578179797. The next prime is 28578179809. The reversal of 28578179808 is 80897187582.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×28578179808² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28578179809) 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 15 ways as a sum of consecutive naturals, for example, 506710 + ... + 560277.

It is an arithmetic number, because the mean of its divisors is an integer number (896269920).

Almost surely, 2^28578179808 is an apocalyptic number.

It is an amenable number.

28578179808 is an abundant number, since it is smaller than the sum of its proper divisors (57463732512).

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

28578179808 is a wasteful number, since it uses less digits than its factorization.

28578179808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067037 (or 1067023 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 63.

The spelling of 28578179808 in words is "twenty-eight billion, five hundred seventy-eight million, one hundred seventy-nine thousand, eight hundred eight".