28438946073 has 32 divisors (see below), whose sum is σ = 43046400000. Its totient is φ = 18548057808.

The previous prime is 28438946047. The next prime is 28438946083. The reversal of 28438946073 is 37064983482.

28438946073 is a `hidden beast` number, since 2 + 84 + 38 + 9 + 460 + 73 = 666.

It is not a de Polignac number, because 28438946073 - 2⁸ = 28438945817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28438946083) 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 31 ways as a sum of consecutive naturals, for example, 5686428 + ... + 5691426.

It is an arithmetic number, because the mean of its divisors is an integer number (1345200000).

Almost surely, 2^28438946073 is an apocalyptic number.

It is an amenable number.

28438946073 is a deficient number, since it is larger than the sum of its proper divisors (14607453927).

28438946073 is a wasteful number, since it uses less digits than its factorization.

28438946073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538 (or 9532 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 28438946073 in words is "twenty-eight billion, four hundred thirty-eight million, nine hundred forty-six thousand, seventy-three".