428195 has 4 divisors (see below), whose sum is σ = 513840. Its totient is φ = 342552.

The previous prime is 428177. The next prime is 428221. The reversal of 428195 is 591824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 428195 - 2⁸ = 427939 is a prime.

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, 42815 + ... + 42824.

It is an arithmetic number, because the mean of its divisors is an integer number (128460).

2⁴²⁸¹⁹⁵ is an apocalyptic number.

428195 is a deficient number, since it is larger than the sum of its proper divisors (85645).

428195 is an equidigital number, since it uses as much as digits as its factorization.

428195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85644.

The product of its digits is 2880, while the sum is 29.

The square root of 428195 is about 654.3661054792. The cubic root of 428195 is about 75.3726637414.

It can be divided in two parts, 42819 and 5, that added together give a palindrome (42824).

The spelling of 428195 in words is "four hundred twenty-eight thousand, one hundred ninety-five".