28545460438 has 16 divisors (see below), whose sum is σ = 48321470160. Its totient is φ = 12527788000.

The previous prime is 28545460423. The next prime is 28545460439. The reversal of 28545460438 is 83406454582.

It is a junction number, because it is equal to n+sod(n) for n = 28545460391 and 28545460400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545460439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22370413 + ... + 22371688.

It is an arithmetic number, because the mean of its divisors is an integer number (3020091885).

Almost surely, 2^28545460438 is an apocalyptic number.

28545460438 is a deficient number, since it is larger than the sum of its proper divisors (19776009722).

28545460438 is a wasteful number, since it uses less digits than its factorization.

28545460438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44742143.

The product of its (nonzero) digits is 3686400, while the sum is 49.

The spelling of 28545460438 in words is "twenty-eight billion, five hundred forty-five million, four hundred sixty thousand, four hundred thirty-eight".