28214814820 has 24 divisors (see below), whose sum is σ = 59374828800. Its totient is φ = 11262360672.

The previous prime is 28214814791. The next prime is 28214814833. The reversal of 28214814820 is 2841841282.

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, 1463010 + ... + 1482169.

It is an arithmetic number, because the mean of its divisors is an integer number (2473951200).

Almost surely, 2^28214814820 is an apocalyptic number.

28214814820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28214814820 is an abundant number, since it is smaller than the sum of its proper divisors (31160013980).

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

28214814820 is a wasteful number, since it uses less digits than its factorization.

28214814820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945667 (or 2945665 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 40.

The spelling of 28214814820 in words is "twenty-eight billion, two hundred fourteen million, eight hundred fourteen thousand, eight hundred twenty".