28330075078258 has 4 divisors (see below), whose sum is σ = 42495112617390. Its totient is φ = 14165037539128.

The previous prime is 28330075078223. The next prime is 28330075078271. The reversal of 28330075078258 is 85287057003382.

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., 26303902185289 + 2026172892969 = 5128733^2 + 1423437^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7082518769563 + ... + 7082518769566.

Almost surely, 2^{28330075078258} is an apocalyptic number.

28330075078258 is a deficient number, since it is larger than the sum of its proper divisors (14165037539132).

28330075078258 is a wasteful number, since it uses less digits than its factorization.

28330075078258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14165037539131.

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 28330075078258 in words is "twenty-eight trillion, three hundred thirty billion, seventy-five million, seventy-eight thousand, two hundred fifty-eight".