195728430 has 32 divisors (see below), whose sum is σ = 473913504. Its totient is φ = 51731456.

The previous prime is 195728411. The next prime is 195728431. The reversal of 195728430 is 34827591.

195728430 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195728431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25479 + ... + 32258.

It is an arithmetic number, because the mean of its divisors is an integer number (14809797).

Almost surely, 2^195728430 is an apocalyptic number.

195728430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195728430 is an abundant number, since it is smaller than the sum of its proper divisors (278185074).

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

195728430 is a wasteful number, since it uses less digits than its factorization.

195728430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57860.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 195728430 is about 13990.2977094842. The cubic root of 195728430 is about 580.6101684119.

The spelling of 195728430 in words is "one hundred ninety-five million, seven hundred twenty-eight thousand, four hundred thirty".