28338978704 has 10 divisors (see below), whose sum is σ = 54906771270. Its totient is φ = 14169489344.

The previous prime is 28338978697. The next prime is 28338978721. The reversal of 28338978704 is 40787983382.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25329359104 + 3009619600 = 159152^2 + 54860^2 .

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 as a sum of consecutive naturals, namely, 885593069 + ... + 885593100.

It is an arithmetic number, because the mean of its divisors is an integer number (5490677127).

Almost surely, 2^28338978704 is an apocalyptic number.

It is an amenable number.

28338978704 is a deficient number, since it is larger than the sum of its proper divisors (26567792566).

28338978704 is a wasteful number, since it uses less digits than its factorization.

28338978704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771186177 (or 1771186171 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 28338978704 in words is "twenty-eight billion, three hundred thirty-eight million, nine hundred seventy-eight thousand, seven hundred four".