28785814 has 8 divisors (see below), whose sum is σ = 43787088. Its totient is φ = 14190120.

The previous prime is 28785803. The next prime is 28785821. The reversal of 28785814 is 41858782.

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, 101217 + ... + 101500.

It is an arithmetic number, because the mean of its divisors is an integer number (5473386).

Almost surely, 2^28785814 is an apocalyptic number.

28785814 is a deficient number, since it is larger than the sum of its proper divisors (15001274).

28785814 is a wasteful number, since it uses less digits than its factorization.

28785814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202790.

The product of its digits is 143360, while the sum is 43.

The square root of 28785814 is about 5365.2412806881. The cubic root of 28785814 is about 306.4734366103.

The spelling of 28785814 in words is "twenty-eight million, seven hundred eighty-five thousand, eight hundred fourteen".