28190392894 has 8 divisors (see below), whose sum is σ = 42388978320. Its totient is φ = 14060733456.

The previous prime is 28190392873. The next prime is 28190392913. The reversal of 28190392894 is 49829309182.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17230474 + ... + 17232109.

It is an arithmetic number, because the mean of its divisors is an integer number (5298622290).

Almost surely, 2^28190392894 is an apocalyptic number.

28190392894 is a deficient number, since it is larger than the sum of its proper divisors (14198585426).

28190392894 is a wasteful number, since it uses less digits than its factorization.

28190392894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34462994.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 28190392894 in words is "twenty-eight billion, one hundred ninety million, three hundred ninety-two thousand, eight hundred ninety-four".