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195820 = 2259791
BaseRepresentation
bin101111110011101100
3100221121121
4233303230
522231240
64110324
71443622
oct576354
9327547
10195820
11124139
12953a4
136b191
1451512
153d04a
hex2fcec

195820 has 12 divisors (see below), whose sum is σ = 411264. Its totient is φ = 78320.

The previous prime is 195817. The next prime is 195863. The reversal of 195820 is 28591.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4876 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (34272).

2195820 is an apocalyptic number.

195820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195820 is an abundant number, since it is smaller than the sum of its proper divisors (215444).

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

195820 is a wasteful number, since it uses less digits than its factorization.

195820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9800 (or 9798 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 195820 is about 442.5155364504. The cubic root of 195820 is about 58.0700698922.

The spelling of 195820 in words is "one hundred ninety-five thousand, eight hundred twenty".