28907083889 has 8 divisors (see below), whose sum is σ = 28999832160. Its totient is φ = 28814377536.

The previous prime is 28907083853. The next prime is 28907083939. The reversal of 28907083889 is 98838070982.

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 28907083889 - 2²⁴ = 28890306673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28907083819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940102 + ... + 1954944.

It is an arithmetic number, because the mean of its divisors is an integer number (3624979020).

Almost surely, 2^28907083889 is an apocalyptic number.

It is an amenable number.

28907083889 is a deficient number, since it is larger than the sum of its proper divisors (92748271).

28907083889 is a wasteful number, since it uses less digits than its factorization.

28907083889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20959.

The product of its (nonzero) digits is 13934592, while the sum is 62.

The spelling of 28907083889 in words is "twenty-eight billion, nine hundred seven million, eighty-three thousand, eight hundred eighty-nine".