195289028 has 24 divisors (see below), whose sum is σ = 373403520. Its totient is φ = 88629920.

The previous prime is 195289009. The next prime is 195289069. The reversal of 195289028 is 820982591.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a self number, because there is not a number n which added to its sum of digits gives 195289028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28550 + ... + 34722.

It is an arithmetic number, because the mean of its divisors is an integer number (15558480).

Almost surely, 2^195289028 is an apocalyptic number.

It is an amenable number.

195289028 is a deficient number, since it is larger than the sum of its proper divisors (178114492).

195289028 is a wasteful number, since it uses less digits than its factorization.

195289028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6907 (or 6905 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 195289028 is about 13974.5850743412. The cubic root of 195289028 is about 580.1753611642.

The spelling of 195289028 in words is "one hundred ninety-five million, two hundred eighty-nine thousand, twenty-eight".