28897538071 has 8 divisors (see below), whose sum is σ = 29231753040. Its totient is φ = 28563534912.

The previous prime is 28897538069. The next prime is 28897538081. The reversal of 28897538071 is 17083579882.

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

It is a cyclic number.

It is not a de Polignac number, because 28897538071 - 2¹ = 28897538069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28897537997 and 28897538015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28897538081) 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, 230181 + ... + 332833.

It is an arithmetic number, because the mean of its divisors is an integer number (3653969130).

Almost surely, 2^28897538071 is an apocalyptic number.

28897538071 is a deficient number, since it is larger than the sum of its proper divisors (334214969).

28897538071 is a wasteful number, since it uses less digits than its factorization.

28897538071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105905.

The product of its (nonzero) digits is 6773760, while the sum is 58.

The spelling of 28897538071 in words is "twenty-eight billion, eight hundred ninety-seven million, five hundred thirty-eight thousand, seventy-one".