28058370880 has 56 divisors (see below), whose sum is σ = 67160329992. Its totient is φ = 11165171712.

The previous prime is 28058370877. The next prime is 28058370881. The reversal of 28058370880 is 8807385082.

It can be written as a sum of positive squares in 4 ways, for example, as 531579136 + 27526791744 = 23056^2 + 165912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058370881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165397 + ... + 288916.

It is an arithmetic number, because the mean of its divisors is an integer number (1199291607).

Almost surely, 2^28058370880 is an apocalyptic number.

28058370880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28058370880 is an abundant number, since it is smaller than the sum of its proper divisors (39101959112).

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

28058370880 is a wasteful number, since it uses less digits than its factorization.

28058370880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454523 (or 454513 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 28058370880 in words is "twenty-eight billion, fifty-eight million, three hundred seventy thousand, eight hundred eighty".