28958139842 has 8 divisors (see below), whose sum is σ = 43455188556. Its totient is φ = 14473076992.

The previous prime is 28958139839. The next prime is 28958139851. The reversal of 28958139842 is 24893185982.

It can be written as a sum of positive squares in 2 ways, for example, as 17432184961 + 11525954881 = 132031^2 + 107359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990423 + ... + 3000090.

Almost surely, 2^28958139842 is an apocalyptic number.

28958139842 is a deficient number, since it is larger than the sum of its proper divisors (14497048714).

28958139842 is a wasteful number, since it uses less digits than its factorization.

28958139842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992932.

The product of its digits is 9953280, while the sum is 59.

The spelling of 28958139842 in words is "twenty-eight billion, nine hundred fifty-eight million, one hundred thirty-nine thousand, eight hundred forty-two".