195273820 has 72 divisors (see below), whose sum is σ = 493547040. Its totient is φ = 64632960.

The previous prime is 195273817. The next prime is 195273821. The reversal of 195273820 is 28372591.

195273820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 195273820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195273821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24985 + ... + 31855.

It is an arithmetic number, because the mean of its divisors is an integer number (6854820).

Almost surely, 2^195273820 is an apocalyptic number.

195273820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195273820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246773520).

195273820 is an abundant number, since it is smaller than the sum of its proper divisors (298273220).

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

195273820 is a wasteful number, since it uses less digits than its factorization.

195273820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6923 (or 6914 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 195273820 is about 13974.0409331016. The cubic root of 195273820 is about 580.1603005196.

The spelling of 195273820 in words is "one hundred ninety-five million, two hundred seventy-three thousand, eight hundred twenty".