195297340 has 84 divisors (see below), whose sum is σ = 484242696. Its totient is φ = 66152352.

The previous prime is 195297331. The next prime is 195297353. The reversal of 195297340 is 43792591.

It is a super-2 number, since 2×195297340² = 76282102022151200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 195297293 and 195297302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2352939 + ... + 2353021.

It is an arithmetic number, because the mean of its divisors is an integer number (5764794).

Almost surely, 2^195297340 is an apocalyptic number.

195297340 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 195297340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242121348).

195297340 is an abundant number, since it is smaller than the sum of its proper divisors (288945356).

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

195297340 is an frugal number, since it uses more digits than its factorization.

195297340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 195297340 is about 13974.8824681999. The cubic root of 195297340 is about 580.1835922960.

The spelling of 195297340 in words is "one hundred ninety-five million, two hundred ninety-seven thousand, three hundred forty".