28232404639 has 2 divisors, whose sum is σ = 28232404640. Its totient is φ = 28232404638.

The previous prime is 28232404579. The next prime is 28232404691. The reversal of 28232404639 is 93640423282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28232404639 - 2⁹ = 28232404127 is a prime.

It is a super-3 number, since 3×28232404639³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28232404595 and 28232404604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28232404139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116202319 + 14116202320.

It is an arithmetic number, because the mean of its divisors is an integer number (14116202320).

Almost surely, 2^28232404639 is an apocalyptic number.

28232404639 is a deficient number, since it is larger than the sum of its proper divisors (1).

28232404639 is an equidigital number, since it uses as much as digits as its factorization.

28232404639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 28232404639 in words is "twenty-eight billion, two hundred thirty-two million, four hundred four thousand, six hundred thirty-nine".