195343920 has 80 divisors (see below), whose sum is σ = 672858720. Its totient is φ = 52091136.

The previous prime is 195343877. The next prime is 195343937. The reversal of 195343920 is 29343591.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43059 + ... + 47378.

It is an arithmetic number, because the mean of its divisors is an integer number (8410734).

Almost surely, 2^195343920 is an apocalyptic number.

195343920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195343920 is an abundant number, since it is smaller than the sum of its proper divisors (477514800).

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

195343920 is a wasteful number, since it uses less digits than its factorization.

195343920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90459 (or 90447 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 195343920 is about 13976.5489302617. The cubic root of 195343920 is about 580.2297147939.

The spelling of 195343920 in words is "one hundred ninety-five million, three hundred forty-three thousand, nine hundred twenty".