28058203780 has 12 divisors (see below), whose sum is σ = 58922227980. Its totient is φ = 11223281504.

The previous prime is 28058203751. The next prime is 28058203793. The reversal of 28058203780 is 8730285082.

It can be written as a sum of positive squares in 2 ways, for example, as 20150370304 + 7907833476 = 141952^2 + 88926^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701455075 + ... + 701455114.

It is an arithmetic number, because the mean of its divisors is an integer number (4910185665).

Almost surely, 2^28058203780 is an apocalyptic number.

28058203780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28058203780 is an abundant number, since it is smaller than the sum of its proper divisors (30864024200).

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

28058203780 is a wasteful number, since it uses less digits than its factorization.

28058203780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402910198 (or 1402910196 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 28058203780 in words is "twenty-eight billion, fifty-eight million, two hundred three thousand, seven hundred eighty".