28084012058 has 4 divisors (see below), whose sum is σ = 42126018090. Its totient is φ = 14042006028.

The previous prime is 28084012057. The next prime is 28084012091. The reversal of 28084012058 is 85021048082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85021048082 = 2 ⋅42510524041.

It can be written as a sum of positive squares in only one way, i.e., 17596818409 + 10487193649 = 132653^2 + 102407^2 .

It is not an unprimeable number, because it can be changed into a prime (28084012057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7021003013 + ... + 7021003016.

Almost surely, 2^28084012058 is an apocalyptic number.

28084012058 is a deficient number, since it is larger than the sum of its proper divisors (14042006032).

28084012058 is a wasteful number, since it uses less digits than its factorization.

28084012058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042006031.

The product of its (nonzero) digits is 40960, while the sum is 38.

The spelling of 28084012058 in words is "twenty-eight billion, eighty-four million, twelve thousand, fifty-eight".