28166909458 has 8 divisors (see below), whose sum is σ = 43232930928. Its totient is φ = 13755932484.

The previous prime is 28166909447. The next prime is 28166909467. The reversal of 28166909458 is 85490966182.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163761016 + ... + 163761187.

It is an arithmetic number, because the mean of its divisors is an integer number (5404116366).

Almost surely, 2^28166909458 is an apocalyptic number.

28166909458 is a deficient number, since it is larger than the sum of its proper divisors (15066021470).

28166909458 is a wasteful number, since it uses less digits than its factorization.

28166909458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327522248.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 28166909458 in words is "twenty-eight billion, one hundred sixty-six million, nine hundred nine thousand, four hundred fifty-eight".