195820340 has 24 divisors (see below), whose sum is σ = 412177920. Its totient is φ = 78146208.

The previous prime is 195820337. The next prime is 195820349. The reversal of 195820340 is 43028591.

It is a junction number, because it is equal to n+sod(n) for n = 195820297 and 195820306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195820349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2372 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (17174080).

Almost surely, 2^195820340 is an apocalyptic number.

195820340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195820340 is an abundant number, since it is smaller than the sum of its proper divisors (216357580).

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

195820340 is a wasteful number, since it uses less digits than its factorization.

195820340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22751 (or 22749 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 195820340 is about 13993.5821003773. The cubic root of 195820340 is about 580.7010350102.

The spelling of 195820340 in words is "one hundred ninety-five million, eight hundred twenty thousand, three hundred forty".