28005525553028 has 48 divisors (see below), whose sum is σ = 49595384084400. Its totient is φ = 13836139130880.

The previous prime is 28005525553001. The next prime is 28005525553051. The reversal of 28005525553028 is 82035552550082.

It can be written as a sum of positive squares in 8 ways, for example, as 844667607364 + 27160857945664 = 919058^2 + 5211608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 860077868 + ... + 860110428.

It is an arithmetic number, because the mean of its divisors is an integer number (1033237168425).

Almost surely, 2^{28005525553028} is an apocalyptic number.

It is an amenable number.

28005525553028 is a deficient number, since it is larger than the sum of its proper divisors (21589858531372).

28005525553028 is a wasteful number, since it uses less digits than its factorization.

28005525553028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38040 (or 38038 counting only the distinct ones).

The product of its (nonzero) digits is 4800000, while the sum is 50.

The spelling of 28005525553028 in words is "twenty-eight trillion, five billion, five hundred twenty-five million, five hundred fifty-three thousand, twenty-eight".