449728310728 has 16 divisors (see below), whose sum is σ = 843254357760. Its totient is φ = 224860482000.

The previous prime is 449728310723. The next prime is 449728310803. The reversal of 449728310728 is 827013827944.

It is not an unprimeable number, because it can be changed into a prime (449728310723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101413 + ... + 953803.

It is an arithmetic number, because the mean of its divisors is an integer number (52703397360).

Almost surely, 2^449728310728 is an apocalyptic number.

It is an amenable number.

449728310728 is a deficient number, since it is larger than the sum of its proper divisors (393526047032).

449728310728 is a wasteful number, since it uses less digits than its factorization.

449728310728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918348 (or 918344 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 449728310728 in words is "four hundred forty-nine billion, seven hundred twenty-eight million, three hundred ten thousand, seven hundred twenty-eight".