28745478442 has 16 divisors (see below), whose sum is σ = 45391296960. Its totient is φ = 13615169472.

The previous prime is 28745478431. The next prime is 28745478473. The reversal of 28745478442 is 24487454782.

It is an unprimeable number.

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, 619938 + ... + 664690.

It is an arithmetic number, because the mean of its divisors is an integer number (2836956060).

Almost surely, 2^28745478442 is an apocalyptic number.

28745478442 is a deficient number, since it is larger than the sum of its proper divisors (16645818518).

28745478442 is a wasteful number, since it uses less digits than its factorization.

28745478442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61677.

The product of its digits is 16056320, while the sum is 55.

The spelling of 28745478442 in words is "twenty-eight billion, seven hundred forty-five million, four hundred seventy-eight thousand, four hundred forty-two".