28730825842 has 4 divisors (see below), whose sum is σ = 43096238766. Its totient is φ = 14365412920.

The previous prime is 28730825839. The next prime is 28730825873. The reversal of 28730825842 is 24852803782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19821542521 + 8909283321 = 140789^2 + 94389^2 .

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 as a sum of consecutive naturals, namely, 7182706459 + ... + 7182706462.

Almost surely, 2^28730825842 is an apocalyptic number.

28730825842 is a deficient number, since it is larger than the sum of its proper divisors (14365412924).

28730825842 is a wasteful number, since it uses less digits than its factorization.

28730825842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14365412923.

The product of its (nonzero) digits is 1720320, while the sum is 49.

The spelling of 28730825842 in words is "twenty-eight billion, seven hundred thirty million, eight hundred twenty-five thousand, eight hundred forty-two".