28257058048 has 36 divisors (see below), whose sum is σ = 58348708740. Its totient is φ = 13641334784.

The previous prime is 28257058013. The next prime is 28257058061. The reversal of 28257058048 is 84085075282.

It can be written as a sum of positive squares in 2 ways, for example, as 21658420224 + 6598637824 = 147168^2 + 81232^2 .

It is a super-2 number, since 2×28257058048² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28257057992 and 28257058010.

It is a congruent number.

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, 1895665 + ... + 1910512.

It is an arithmetic number, because the mean of its divisors is an integer number (1620797465).

Almost surely, 2^28257058048 is an apocalyptic number.

It is an amenable number.

28257058048 is an abundant number, since it is smaller than the sum of its proper divisors (30091650692).

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

28257058048 is an equidigital number, since it uses as much as digits as its factorization.

28257058048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3806222 (or 3806208 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 49.

The spelling of 28257058048 in words is "twenty-eight billion, two hundred fifty-seven million, fifty-eight thousand, forty-eight".