28394753122 has 8 divisors (see below), whose sum is σ = 44060823900. Its totient is φ = 13707811824.

The previous prime is 28394753117. The next prime is 28394753141. The reversal of 28394753122 is 22135749382.

It can be written as a sum of positive squares in 2 ways, for example, as 27575591481 + 819161641 = 166059^2 + 28621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 244782297 + ... + 244782412.

Almost surely, 2^28394753122 is an apocalyptic number.

28394753122 is a deficient number, since it is larger than the sum of its proper divisors (15666070778).

28394753122 is a wasteful number, since it uses less digits than its factorization.

28394753122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489564740.

The product of its digits is 725760, while the sum is 46.

The spelling of 28394753122 in words is "twenty-eight billion, three hundred ninety-four million, seven hundred fifty-three thousand, one hundred twenty-two".