28814479500 has 48 divisors (see below), whose sum is σ = 83907768672. Its totient is φ = 7683860800.

The previous prime is 28814479493. The next prime is 28814479543. The reversal of 28814479500 is 597441882.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28814479500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9603327 + ... + 9606326.

It is an arithmetic number, because the mean of its divisors is an integer number (1748078514).

Almost surely, 2^28814479500 is an apocalyptic number.

28814479500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28814479500 is an abundant number, since it is smaller than the sum of its proper divisors (55093289172).

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

28814479500 is a wasteful number, since it uses less digits than its factorization.

28814479500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19209675 (or 19209663 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 28814479500 in words is "twenty-eight billion, eight hundred fourteen million, four hundred seventy-nine thousand, five hundred".