28531472104 has 32 divisors (see below), whose sum is σ = 54017448480. Its totient is φ = 14126923584.

The previous prime is 28531472093. The next prime is 28531472149. The reversal of 28531472104 is 40127413582.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3031534 + ... + 3040930.

It is an arithmetic number, because the mean of its divisors is an integer number (1688045265).

Almost surely, 2^28531472104 is an apocalyptic number.

It is an amenable number.

28531472104 is a deficient number, since it is larger than the sum of its proper divisors (25485976376).

28531472104 is a wasteful number, since it uses less digits than its factorization.

28531472104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13057 (or 13053 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

Adding to 28531472104 its reverse (40127413582), we get a palindrome (68658885686).

The spelling of 28531472104 in words is "twenty-eight billion, five hundred thirty-one million, four hundred seventy-two thousand, one hundred four".