28116622724 has 12 divisors (see below), whose sum is σ = 49205828364. Its totient is φ = 14057814624.

The previous prime is 28116622669. The next prime is 28116622727. The reversal of 28116622724 is 42722661182.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6671949124 + 21444673600 = 81682^2 + 146440^2 .

It is not an unprimeable number, because it can be changed into a prime (28116622727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22394 + ... + 238190.

It is an arithmetic number, because the mean of its divisors is an integer number (4100485697).

Almost surely, 2^28116622724 is an apocalyptic number.

It is an amenable number.

28116622724 is a deficient number, since it is larger than the sum of its proper divisors (21089205640).

28116622724 is a wasteful number, since it uses less digits than its factorization.

28116622724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248374 (or 248372 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The spelling of 28116622724 in words is "twenty-eight billion, one hundred sixteen million, six hundred twenty-two thousand, seven hundred twenty-four".