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197380 = 22571139
BaseRepresentation
bin110000001100000100
3101000202101
4300030010
522304010
64121444
71451311
oct601404
9330671
10197380
11125327
1296284
136bac1
1451d08
153d73a
hex30304

197380 has 24 divisors (see below), whose sum is σ = 423360. Its totient is φ = 77280.

The previous prime is 197371. The next prime is 197381. The reversal of 197380 is 83791.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351 + ... + 1489.

It is an arithmetic number, because the mean of its divisors is an integer number (17640).

2197380 is an apocalyptic number.

197380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197380 is an abundant number, since it is smaller than the sum of its proper divisors (225980).

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

197380 is a wasteful number, since it uses less digits than its factorization.

197380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 197380 is about 444.2746898035. The cubic root of 197380 is about 58.2238672711.

The spelling of 197380 in words is "one hundred ninety-seven thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 71 139 142 278 284 355 556 695 710 1390 1420 2780 9869 19738 39476 49345 98690 197380