195890244 has 96 divisors (see below), whose sum is σ = 523635840. Its totient is φ = 56448000.

The previous prime is 195890243. The next prime is 195890263. The reversal of 195890244 is 442098591.

It is a junction number, because it is equal to n+sod(n) for n = 195890196 and 195890205.

It is not an unprimeable number, because it can be changed into a prime (195890243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 279094 + ... + 279794.

It is an arithmetic number, because the mean of its divisors is an integer number (5454540).

Almost surely, 2^195890244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195890244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261817920).

195890244 is an abundant number, since it is smaller than the sum of its proper divisors (327745596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195890244 is a wasteful number, since it uses less digits than its factorization.

195890244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 195890244 is about 13996.0795939434. The cubic root of 195890244 is about 580.7701263957.

The spelling of 195890244 in words is "one hundred ninety-five million, eight hundred ninety thousand, two hundred forty-four".