28351855 has 8 divisors (see below), whose sum is σ = 38882592. Its totient is φ = 19441248.

The previous prime is 28351831. The next prime is 28351867. The reversal of 28351855 is 55815382.

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

It is a cyclic number.

It is not a de Polignac number, because 28351855 - 2⁷ = 28351727 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404992 + ... + 405061.

It is an arithmetic number, because the mean of its divisors is an integer number (4860324).

Almost surely, 2^28351855 is an apocalyptic number.

28351855 is a deficient number, since it is larger than the sum of its proper divisors (10530737).

28351855 is an equidigital number, since it uses as much as digits as its factorization.

28351855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810065.

The product of its digits is 48000, while the sum is 37.

The square root of 28351855 is about 5324.6459976228. The cubic root of 28351855 is about 304.9255573941.

The spelling of 28351855 in words is "twenty-eight million, three hundred fifty-one thousand, eight hundred fifty-five".