1028195 has 16 divisors (see below), whose sum is σ = 1460160. Its totient is φ = 680064.

The previous prime is 1028191. The next prime is 1028201. The reversal of 1028195 is 5918201.

1028195 = 85² + 86² + ... + 154².

It is a happy number.

It is a Cunningham number, because it is equal to 1014²-1.

It is not a de Polignac number, because 1028195 - 2² = 1028191 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1028191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509 + ... + 1521.

It is an arithmetic number, because the mean of its divisors is an integer number (91260).

2^1028195 is an apocalyptic number.

1028195 is a deficient number, since it is larger than the sum of its proper divisors (431965).

1028195 is a wasteful number, since it uses less digits than its factorization.

1028195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1028195 is about 1013.9995069032. Note that the first 3 decimals coincide. The cubic root of 1028195 is about 100.9311362754.

The spelling of 1028195 in words is "one million, twenty-eight thousand, one hundred ninety-five".