28005104774 has 8 divisors (see below), whose sum is σ = 42117338880. Its totient is φ = 13965991816.

The previous prime is 28005104767. The next prime is 28005104791. The reversal of 28005104774 is 47740150082.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18279329 + ... + 18280860.

It is an arithmetic number, because the mean of its divisors is an integer number (5264667360).

Almost surely, 2^28005104774 is an apocalyptic number.

28005104774 is a deficient number, since it is larger than the sum of its proper divisors (14112234106).

28005104774 is a wasteful number, since it uses less digits than its factorization.

28005104774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36560574.

The product of its (nonzero) digits is 62720, while the sum is 38.

The spelling of 28005104774 in words is "twenty-eight billion, five million, one hundred four thousand, seven hundred seventy-four".