28605746280 has 64 divisors (see below), whose sum is σ = 85846132800. Its totient is φ = 7625630720.

The previous prime is 28605746209. The next prime is 28605746287. The reversal of 28605746280 is 8264750682.

It is not an unprimeable number, because it can be changed into a prime (28605746287) 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 15 ways as a sum of consecutive naturals, for example, 332095 + ... + 409265.

It is an arithmetic number, because the mean of its divisors is an integer number (1341345825).

Almost surely, 2^28605746280 is an apocalyptic number.

28605746280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28605746280 is an abundant number, since it is smaller than the sum of its proper divisors (57240386520).

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

28605746280 is a wasteful number, since it uses less digits than its factorization.

28605746280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80274 (or 80270 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 28605746280 in words is "twenty-eight billion, six hundred five million, seven hundred forty-six thousand, two hundred eighty".