28758056059400 has 96 divisors (see below), whose sum is σ = 66909551030280. Its totient is φ = 11495127552000.

The previous prime is 28758056059399. The next prime is 28758056059457. The reversal of 28758056059400 is 495065085782.

It can be written as a sum of positive squares in 12 ways, for example, as 5674047864676 + 23084008194724 = 2382026^2 + 4804582^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28758056059400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2005296230 + ... + 2005310570.

Almost surely, 2^{28758056059400} is an apocalyptic number.

28758056059400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28758056059400 is an abundant number, since it is smaller than the sum of its proper divisors (38151494970880).

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

28758056059400 is a wasteful number, since it uses less digits than its factorization.

28758056059400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20715 (or 20706 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 28758056059400 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, fifty-nine thousand, four hundred".