28838893123 has 4 divisors (see below), whose sum is σ = 29162925720. Its totient is φ = 28514860528.

The previous prime is 28838893067. The next prime is 28838893151. The reversal of 28838893123 is 32139883882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28838893123 - 2²⁵ = 28805338691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28838897123) 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, 162016165 + ... + 162016342.

It is an arithmetic number, because the mean of its divisors is an integer number (7290731430).

Almost surely, 2^28838893123 is an apocalyptic number.

28838893123 is a deficient number, since it is larger than the sum of its proper divisors (324032597).

28838893123 is an equidigital number, since it uses as much as digits as its factorization.

28838893123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324032596.

The product of its digits is 3981312, while the sum is 55.

The spelling of 28838893123 in words is "twenty-eight billion, eight hundred thirty-eight million, eight hundred ninety-three thousand, one hundred twenty-three".