195118728 has 96 divisors (see below), whose sum is σ = 577786560. Its totient is φ = 53786880.

The previous prime is 195118717. The next prime is 195118739. The reversal of 195118728 is 827811591.

It is an interprime number because it is at equal distance from previous prime (195118717) and next prime (195118739).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 195118728.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140598 + ... + 141978.

It is an arithmetic number, because the mean of its divisors is an integer number (6018610).

Almost surely, 2^195118728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195118728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288893280).

195118728 is an abundant number, since it is smaller than the sum of its proper divisors (382667832).

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

195118728 is a wasteful number, since it uses less digits than its factorization.

195118728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1422 counting only the distinct ones).

The product of its digits is 40320, while the sum is 42.

The square root of 195118728 is about 13968.4905412145. The cubic root of 195118728 is about 580.0066665900.

The spelling of 195118728 in words is "one hundred ninety-five million, one hundred eighteen thousand, seven hundred twenty-eight".