195432840 has 96 divisors (see below), whose sum is σ = 662800320. Its totient is φ = 49847424.

The previous prime is 195432821. The next prime is 195432857. The reversal of 195432840 is 48234591.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 195432795 and 195432804.

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, 3522 + ... + 20081.

It is an arithmetic number, because the mean of its divisors is an integer number (6904170).

Almost surely, 2^195432840 is an apocalyptic number.

195432840 is a gapful number since it is divisible by the number (10) 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 195432840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331400160).

195432840 is an abundant number, since it is smaller than the sum of its proper divisors (467367480).

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

195432840 is a wasteful number, since it uses less digits than its factorization.

195432840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23643 (or 23636 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 195432840 is about 13979.7296111191. The cubic root of 195432840 is about 580.3177410806.

The spelling of 195432840 in words is "one hundred ninety-five million, four hundred thirty-two thousand, eight hundred forty".