195297280 has 76 divisors (see below), whose sum is σ = 471858300. Its totient is φ = 77594624.

The previous prime is 195297253. The next prime is 195297287. The reversal of 195297280 is 82792591.

It can be written as a sum of positive squares in 2 ways, for example, as 44302336 + 150994944 = 6656^2 + 12288^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (195297287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310646 + ... + 1310794.

Almost surely, 2^195297280 is an apocalyptic number.

195297280 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 195297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235929150).

195297280 is an abundant number, since it is smaller than the sum of its proper divisors (276561020).

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

195297280 is an frugal number, since it uses more digits than its factorization.

195297280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 195297280 is about 13974.8803214911. The cubic root of 195297280 is about 580.1835328806.

The spelling of 195297280 in words is "one hundred ninety-five million, two hundred ninety-seven thousand, two hundred eighty".