28716028887446 has 8 divisors (see below), whose sum is σ = 43074452424144. Its totient is φ = 14357878079400.

The previous prime is 28716028887409. The next prime is 28716028887521. The reversal of 28716028887446 is 64478882061782.

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

It is a super-2 number, since 2×28716028887446² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28716028887446.

It is a congruent 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 in 3 ways as a sum of consecutive naturals, for example, 67918730 + ... + 68340221.

It is an arithmetic number, because the mean of its divisors is an integer number (5384306553018).

Almost surely, 2^{28716028887446} is an apocalyptic number.

28716028887446 is a deficient number, since it is larger than the sum of its proper divisors (14358423536698).

28716028887446 is a wasteful number, since it uses less digits than its factorization.

28716028887446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136364326.

The product of its (nonzero) digits is 462422016, while the sum is 71.

The spelling of 28716028887446 in words is "twenty-eight trillion, seven hundred sixteen billion, twenty-eight million, eight hundred eighty-seven thousand, four hundred forty-six".