28238469239 has 4 divisors (see below), whose sum is σ = 28239208824. Its totient is φ = 28237729656.

The previous prime is 28238469187. The next prime is 28238469269. The reversal of 28238469239 is 93296483282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93296483282 = 2 ⋅46648241641.

It is a cyclic number.

It is not a de Polignac number, because 28238469239 - 2¹⁶ = 28238403703 is a prime.

It is a super-2 number, since 2×28238469239² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28238469269) 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, 309212 + ... + 389985.

It is an arithmetic number, because the mean of its divisors is an integer number (7059802206).

Almost surely, 2^28238469239 is an apocalyptic number.

28238469239 is a deficient number, since it is larger than the sum of its proper divisors (739585).

28238469239 is an equidigital number, since it uses as much as digits as its factorization.

28238469239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739584.

The product of its digits is 8957952, while the sum is 56.

The spelling of 28238469239 in words is "twenty-eight billion, two hundred thirty-eight million, four hundred sixty-nine thousand, two hundred thirty-nine".