195220 has 24 divisors (see below), whose sum is σ = 421344. Its totient is φ = 75936.

The previous prime is 195203. The next prime is 195229. The reversal of 195220 is 22591.

195220 = 107² + 108² + ... + 121².

It is a super-2 number, since 2×195220² = 76221696800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747 + ... + 973.

It is an arithmetic number, because the mean of its divisors is an integer number (17556).

2¹⁹⁵²²⁰ is an apocalyptic number.

195220 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 195220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210672).

195220 is an abundant number, since it is smaller than the sum of its proper divisors (226124).

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

195220 is a wasteful number, since it uses less digits than its factorization.

195220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 195220 is about 441.8370740443. The cubic root of 195220 is about 58.0106995718.

The spelling of 195220 in words is "one hundred ninety-five thousand, two hundred twenty".