195457320 has 128 divisors (see below), whose sum is σ = 660960000. Its totient is φ = 51367680.

The previous prime is 195457309. The next prime is 195457357. The reversal of 195457320 is 23754591.

195457320 is a `hidden beast` number, since 19 + 54 + 573 + 20 = 666.

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 31 ways as a sum of consecutive naturals, for example, 75406 + ... + 77954.

It is an arithmetic number, because the mean of its divisors is an integer number (5163750).

Almost surely, 2^195457320 is an apocalyptic number.

195457320 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 195457320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330480000).

195457320 is an abundant number, since it is smaller than the sum of its proper divisors (465502680).

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

195457320 is a wasteful number, since it uses less digits than its factorization.

195457320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 195457320 is about 13980.6051371176. The cubic root of 195457320 is about 580.3419703507.

The spelling of 195457320 in words is "one hundred ninety-five million, four hundred fifty-seven thousand, three hundred twenty".