28820195 has 8 divisors (see below), whose sum is σ = 34644336. Its totient is φ = 23016096.

The previous prime is 28820179. The next prime is 28820221. The reversal of 28820195 is 59102882.

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 28820195 - 2⁴ = 28820179 is a prime.

It is a Duffinian 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, 1637 + ... + 7766.

It is an arithmetic number, because the mean of its divisors is an integer number (4330542).

Almost surely, 2^28820195 is an apocalyptic number.

28820195 is a deficient number, since it is larger than the sum of its proper divisors (5824141).

28820195 is an equidigital number, since it uses as much as digits as its factorization.

28820195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 28820195 is about 5368.4443743043. Note that the first 3 decimals coincide. The cubic root of 28820195 is about 306.5954026016.

The spelling of 28820195 in words is "twenty-eight million, eight hundred twenty thousand, one hundred ninety-five".