28747805443204 has 81 divisors (see below), whose sum is σ = 55232477083749. Its totient is φ = 13089406093440.

The previous prime is 28747805443183. The next prime is 28747805443223. The reversal of 28747805443204 is 40234450874782.

The square root of 28747805443204 is 5361698.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22381509428100 + 6366296015104 = 4730910^2 + 2523152^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5651227149 + ... + 5651232235.

Almost surely, 2^{28747805443204} is an apocalyptic number.

28747805443204 is the 5361698-th square number.

It is an amenable number.

28747805443204 is a deficient number, since it is larger than the sum of its proper divisors (26484671640545).

28747805443204 is an frugal number, since it uses more digits than its factorization.

28747805443204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274 (or 5137 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 58.

The spelling of 28747805443204 in words is "twenty-eight trillion, seven hundred forty-seven billion, eight hundred five million, four hundred forty-three thousand, two hundred four".