28346943680 has 56 divisors (see below), whose sum is σ = 73637637840. Its totient is φ = 10307978240.

The previous prime is 28346943679. The next prime is 28346943689. The reversal of 28346943680 is 8634964382.

It is not an unprimeable number, because it can be changed into a prime (28346943689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4023035 + ... + 4030074.

Almost surely, 2^28346943680 is an apocalyptic number.

28346943680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28346943680 is an abundant number, since it is smaller than the sum of its proper divisors (45290694160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28346943680 is a wasteful number, since it uses less digits than its factorization.

28346943680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8053137 (or 8053127 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 53.

The spelling of 28346943680 in words is "twenty-eight billion, three hundred forty-six million, nine hundred forty-three thousand, six hundred eighty".