28524845431 has 2 divisors, whose sum is σ = 28524845432. Its totient is φ = 28524845430.

The previous prime is 28524845383. The next prime is 28524845497. The reversal of 28524845431 is 13454842582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28524845431 - 2⁹ = 28524844919 is a prime.

It is a super-2 number, since 2×28524845431² (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 (28524845731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14262422715 + 14262422716.

It is an arithmetic number, because the mean of its divisors is an integer number (14262422716).

Almost surely, 2^28524845431 is an apocalyptic number.

28524845431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28524845431 is an equidigital number, since it uses as much as digits as its factorization.

28524845431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1228800, while the sum is 46.

The spelling of 28524845431 in words is "twenty-eight billion, five hundred twenty-four million, eight hundred forty-five thousand, four hundred thirty-one".