28543436467 has 32 divisors (see below), whose sum is σ = 35665717248. Its totient is φ = 22240624896.

The previous prime is 28543436459. The next prime is 28543436549. The reversal of 28543436467 is 76463434582.

It is a happy number.

It is not a de Polignac number, because 28543436467 - 2³ = 28543436459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28543436437) 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 in 31 ways as a sum of consecutive naturals, for example, 4932858 + ... + 4938640.

It is an arithmetic number, because the mean of its divisors is an integer number (1114553664).

Almost surely, 2^28543436467 is an apocalyptic number.

28543436467 is a deficient number, since it is larger than the sum of its proper divisors (7122280781).

28543436467 is a wasteful number, since it uses less digits than its factorization.

28543436467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6619.

The product of its digits is 11612160, while the sum is 52.

The spelling of 28543436467 in words is "twenty-eight billion, five hundred forty-three million, four hundred thirty-six thousand, four hundred sixty-seven".