Search a number
-
+
197838 = 23229379
BaseRepresentation
bin110000010011001110
3101001101100
4300103032
522312323
64123530
71452534
oct602316
9331340
10197838
11125703
12965a6
136c084
1452154
153d943
hex304ce

197838 has 24 divisors (see below), whose sum is σ = 444600. Its totient is φ = 63504.

The previous prime is 197837. The next prime is 197887. The reversal of 197838 is 838791.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333 + ... + 711.

It is an arithmetic number, because the mean of its divisors is an integer number (18525).

2197838 is an apocalyptic number.

197838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222300).

197838 is an abundant number, since it is smaller than the sum of its proper divisors (246762).

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

197838 is a wasteful number, since it uses less digits than its factorization.

197838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 413 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 197838 is about 444.7898380134. The cubic root of 197838 is about 58.2688666498.

It can be divided in two parts, 19783 and 8, that added together give a palindrome (19791).

The spelling of 197838 in words is "one hundred ninety-seven thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 9 18 29 58 87 174 261 379 522 758 1137 2274 3411 6822 10991 21982 32973 65946 98919 197838