28545415456 has 12 divisors (see below), whose sum is σ = 56198786742. Its totient is φ = 14272707712.

The previous prime is 28545415447. The next prime is 28545415469. The reversal of 28545415456 is 65451454582.

It can be written as a sum of positive squares in only one way, i.e., 25529648400 + 3015767056 = 159780^2 + 54916^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 446022085 + ... + 446022148.

Almost surely, 2^28545415456 is an apocalyptic number.

It is an amenable number.

28545415456 is a deficient number, since it is larger than the sum of its proper divisors (27653371286).

28545415456 is an equidigital number, since it uses as much as digits as its factorization.

28545415456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892044243 (or 892044235 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 49.

The spelling of 28545415456 in words is "twenty-eight billion, five hundred forty-five million, four hundred fifteen thousand, four hundred fifty-six".