28854457956 has 45 divisors (see below), whose sum is σ = 75439246729. Its totient is φ = 9617133456.

The previous prime is 28854457871. The next prime is 28854457981. The reversal of 28854457956 is 65975445882.

The square root of 28854457956 is 169866.

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

28854457956 is a `hidden beast` number, since 2 + 8 + 8 + 5 + 4 + 4 + 579 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16448062500 + 12406395456 = 128250^2 + 111384^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28854457893 and 28854457902.

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 14 ways as a sum of consecutive naturals, for example, 3052870 + ... + 3062306.

Almost surely, 2^28854457956 is an apocalyptic number.

28854457956 is the 169866-th square number.

It is an amenable number.

28854457956 is an abundant number, since it is smaller than the sum of its proper divisors (46584788773).

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

28854457956 is an frugal number, since it uses more digits than its factorization.

28854457956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18890 (or 9442 counting only the distinct ones).

The product of its digits is 96768000, while the sum is 63.

It can be divided in two parts, 2885445 and 7956, that added together give a square (2893401 = 1701²).

The spelling of 28854457956 in words is "twenty-eight billion, eight hundred fifty-four million, four hundred fifty-seven thousand, nine hundred fifty-six".