28450238905 has 32 divisors (see below), whose sum is σ = 41510309760. Its totient is φ = 18449003520.

The previous prime is 28450238897. The next prime is 28450238917. The reversal of 28450238905 is 50983205482.

It is not a de Polignac number, because 28450238905 - 2³ = 28450238897 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 782974 + ... + 818503.

It is an arithmetic number, because the mean of its divisors is an integer number (1297197180).

Almost surely, 2^28450238905 is an apocalyptic number.

It is an amenable number.

28450238905 is a deficient number, since it is larger than the sum of its proper divisors (13060070855).

28450238905 is a wasteful number, since it uses less digits than its factorization.

28450238905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601529.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 28450238905 in words is "twenty-eight billion, four hundred fifty million, two hundred thirty-eight thousand, nine hundred five".