28300605644 has 6 divisors (see below), whose sum is σ = 49526059884. Its totient is φ = 14150302820.

The previous prime is 28300605631. The next prime is 28300605647. The reversal of 28300605644 is 44650600382.

It is a junction number, because it is equal to n+sod(n) for n = 28300605598 and 28300605607.

It is not an unprimeable number, because it can be changed into a prime (28300605647) by changing a digit.

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 as a sum of consecutive naturals, namely, 3537575702 + ... + 3537575709.

It is an arithmetic number, because the mean of its divisors is an integer number (8254343314).

Almost surely, 2^28300605644 is an apocalyptic number.

It is an amenable number.

28300605644 is a deficient number, since it is larger than the sum of its proper divisors (21225454240).

28300605644 is a wasteful number, since it uses less digits than its factorization.

28300605644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7075151415 (or 7075151413 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 28300605644 in words is "twenty-eight billion, three hundred million, six hundred five thousand, six hundred forty-four".