28715717446 has 32 divisors (see below), whose sum is σ = 47932932096. Its totient is φ = 12812580000.

The previous prime is 28715717377. The next prime is 28715717497. The reversal of 28715717446 is 64471751782.

It is a happy number.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28715717393 and 28715717402.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 780771 + ... + 816721.

It is an arithmetic number, because the mean of its divisors is an integer number (1497904128).

Almost surely, 2^28715717446 is an apocalyptic number.

28715717446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28715717446 is a deficient number, since it is larger than the sum of its proper divisors (19217214650).

28715717446 is a wasteful number, since it uses less digits than its factorization.

28715717446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36988.

The product of its digits is 2634240, while the sum is 52.

The spelling of 28715717446 in words is "twenty-eight billion, seven hundred fifteen million, seven hundred seventeen thousand, four hundred forty-six".