28055838431 has 2 divisors, whose sum is σ = 28055838432. Its totient is φ = 28055838430.

The previous prime is 28055838427. The next prime is 28055838439. The reversal of 28055838431 is 13483855082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28055838431 - 2² = 28055838427 is a prime.

It is a super-2 number, since 2×28055838431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28055838439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027919215 + 14027919216.

It is an arithmetic number, because the mean of its divisors is an integer number (14027919216).

Almost surely, 2^28055838431 is an apocalyptic number.

28055838431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055838431 is an equidigital number, since it uses as much as digits as its factorization.

28055838431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 28055838431 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-eight thousand, four hundred thirty-one".