28838156093 has 4 divisors (see below), whose sum is σ = 28841242848. Its totient is φ = 28835069340.

The previous prime is 28838156071. The next prime is 28838156107. The reversal of 28838156093 is 39065183882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28838156093 - 2¹⁰ = 28838155069 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 (28838152093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529321 + ... + 1548062.

It is an arithmetic number, because the mean of its divisors is an integer number (7210310712).

Almost surely, 2^28838156093 is an apocalyptic number.

It is an amenable number.

28838156093 is a deficient number, since it is larger than the sum of its proper divisors (3086755).

28838156093 is an equidigital number, since it uses as much as digits as its factorization.

28838156093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086754.

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 28838156093 in words is "twenty-eight billion, eight hundred thirty-eight million, one hundred fifty-six thousand, ninety-three".