28909042093 has 8 divisors (see below), whose sum is σ = 28967989760. Its totient is φ = 28850132880.

The previous prime is 28909042081. The next prime is 28909042111. The reversal of 28909042093 is 39024090982.

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 28909042093 - 2¹⁷ = 28908911021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28909042073) 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, 1850248 + ... + 1865806.

It is an arithmetic number, because the mean of its divisors is an integer number (3620998720).

Almost surely, 2^28909042093 is an apocalyptic number.

It is an amenable number.

28909042093 is a deficient number, since it is larger than the sum of its proper divisors (58947667).

28909042093 is a wasteful number, since it uses less digits than its factorization.

28909042093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19227.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 28909042093 in words is "twenty-eight billion, nine hundred nine million, forty-two thousand, ninety-three".