28019194 has 8 divisors (see below), whose sum is σ = 48032928. Its totient is φ = 12008220.

The previous prime is 28019177. The next prime is 28019207. The reversal of 28019194 is 49191082.

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

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, 1000672 + ... + 1000699.

It is an arithmetic number, because the mean of its divisors is an integer number (6004116).

Almost surely, 2^28019194 is an apocalyptic number.

28019194 is a deficient number, since it is larger than the sum of its proper divisors (20013734).

28019194 is a wasteful number, since it uses less digits than its factorization.

28019194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001380.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 28019194 is about 5293.3159739430. The cubic root of 28019194 is about 303.7282673969.

The spelling of 28019194 in words is "twenty-eight million, nineteen thousand, one hundred ninety-four".