28730285890143 has 8 divisors (see below), whose sum is σ = 38452702028928. Its totient is φ = 19080696839064.

The previous prime is 28730285890121. The next prime is 28730285890169. The reversal of 28730285890143 is 34109858203782.

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

It is not a de Polignac number, because 28730285890143 - 2⁹ = 28730285889631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28730285890843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18206771005 + ... + 18206772582.

It is an arithmetic number, because the mean of its divisors is an integer number (4806587753616).

Almost surely, 2^{28730285890143} is an apocalyptic number.

28730285890143 is a deficient number, since it is larger than the sum of its proper divisors (9722416138785).

28730285890143 is a wasteful number, since it uses less digits than its factorization.

28730285890143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36413543853.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 28730285890143 in words is "twenty-eight trillion, seven hundred thirty billion, two hundred eighty-five million, eight hundred ninety thousand, one hundred forty-three".