28122618734 has 16 divisors (see below), whose sum is σ = 48227288928. Its totient is φ = 12048279552.

The previous prime is 28122618721. The next prime is 28122618737. The reversal of 28122618734 is 43781622182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28122618737) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 314867 + ... + 394190.

It is an arithmetic number, because the mean of its divisors is an integer number (3014205558).

Almost surely, 2^28122618734 is an apocalyptic number.

28122618734 is a deficient number, since it is larger than the sum of its proper divisors (20104670194).

28122618734 is a wasteful number, since it uses less digits than its factorization.

28122618734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711899.

The product of its digits is 258048, while the sum is 44.

The spelling of 28122618734 in words is "twenty-eight billion, one hundred twenty-two million, six hundred eighteen thousand, seven hundred thirty-four".