28758300220 has 24 divisors (see below), whose sum is σ = 65038002624. Its totient is φ = 10618449216.

The previous prime is 28758300211. The next prime is 28758300251. The reversal of 28758300220 is 2200385782.

It is a self number, because there is not a number n which added to its sum of digits gives 28758300220.

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, 55304164 + ... + 55304683.

It is an arithmetic number, because the mean of its divisors is an integer number (2709916776).

Almost surely, 2^28758300220 is an apocalyptic number.

28758300220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28758300220 is an abundant number, since it is smaller than the sum of its proper divisors (36279702404).

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

28758300220 is a wasteful number, since it uses less digits than its factorization.

28758300220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110608869 (or 110608867 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 28758300220 in words is "twenty-eight billion, seven hundred fifty-eight million, three hundred thousand, two hundred twenty".