28345700068624 has 45 divisors (see below), whose sum is σ = 55297047055663. Its totient is φ = 14076154311296.

The previous prime is 28345700068607. The next prime is 28345700068627. The reversal of 28345700068624 is 42686000754382.

The square root of 28345700068624 is 5324068.

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

It can be written as a sum of positive squares in 4 ways, for example, as 11528876976400 + 16816823092224 = 3395420^2 + 4100832^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28345700068627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3173140062 + ... + 3173148994.

Almost surely, 2^{28345700068624} is an apocalyptic number.

28345700068624 is the 5324068-th square number.

It is an amenable number.

28345700068624 is a deficient number, since it is larger than the sum of its proper divisors (26951346987039).

28345700068624 is an frugal number, since it uses more digits than its factorization.

28345700068624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18172 (or 9084 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 28345700068624 in words is "twenty-eight trillion, three hundred forty-five billion, seven hundred million, sixty-eight thousand, six hundred twenty-four".