28643145958 has 8 divisors (see below), whose sum is σ = 49102535952. Its totient is φ = 12275633976.

The previous prime is 28643145953. The next prime is 28643145983. The reversal of 28643145958 is 85954134682.

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

It is a junction number, because it is equal to n+sod(n) for n = 28643145899 and 28643145908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28643145953) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1022969485 + ... + 1022969512.

It is an arithmetic number, because the mean of its divisors is an integer number (6137816994).

Almost surely, 2^28643145958 is an apocalyptic number.

28643145958 is a deficient number, since it is larger than the sum of its proper divisors (20459389994).

28643145958 is a wasteful number, since it uses less digits than its factorization.

28643145958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045939006.

The product of its digits is 8294400, while the sum is 55.

The spelling of 28643145958 in words is "twenty-eight billion, six hundred forty-three million, one hundred forty-five thousand, nine hundred fifty-eight".