195038928 has 100 divisors (see below), whose sum is σ = 645172000. Its totient is φ = 55722816.

The previous prime is 195038923. The next prime is 195038929. The reversal of 195038928 is 829830591.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195038923) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1678 + ... + 19821.

It is an arithmetic number, because the mean of its divisors is an integer number (6451720).

Almost surely, 2^195038928 is an apocalyptic number.

195038928 is a gapful number since it is divisible by the number (18) 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 195038928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322586000).

195038928 is an abundant number, since it is smaller than the sum of its proper divisors (450133072).

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

195038928 is a wasteful number, since it uses less digits than its factorization.

195038928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21526 (or 21511 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 195038928 is about 13965.6338202031. The cubic root of 195038928 is about 579.9275850931.

The spelling of 195038928 in words is "one hundred ninety-five million, thirty-eight thousand, nine hundred twenty-eight".