195019272 has 64 divisors (see below), whose sum is σ = 619113600. Its totient is φ = 55719360.

The previous prime is 195019243. The next prime is 195019283. The reversal of 195019272 is 272910591.

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, 62979 + ... + 66002.

It is an arithmetic number, because the mean of its divisors is an integer number (9673650).

Almost surely, 2^195019272 is an apocalyptic number.

195019272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195019272 is an abundant number, since it is smaller than the sum of its proper divisors (424094328).

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

195019272 is a wasteful number, since it uses less digits than its factorization.

195019272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129003 (or 128993 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 195019272 is about 13964.9300750129. The cubic root of 195019272 is about 579.9081027609.

The spelling of 195019272 in words is "one hundred ninety-five million, nineteen thousand, two hundred seventy-two".