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199284 = 22316607
BaseRepresentation
bin110000101001110100
3101010100220
4300221310
522334114
64134340
71460001
oct605164
9333326
10199284
111267a8
12973b0
136c927
14528a8
153e0a9
hex30a74

199284 has 12 divisors (see below), whose sum is σ = 465024. Its totient is φ = 66424.

The previous prime is 199267. The next prime is 199289. The reversal of 199284 is 482991.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1992842 = 79428225312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199289) by changing a digit.

199284 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8292 + ... + 8315.

It is an arithmetic number, because the mean of its divisors is an integer number (38752).

2199284 is an apocalyptic number.

It is an amenable number.

199284 is an abundant number, since it is smaller than the sum of its proper divisors (265740).

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

199284 is a wasteful number, since it uses less digits than its factorization.

199284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16614 (or 16612 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 199284 is about 446.4123654201. The cubic root of 199284 is about 58.4104847629.

The spelling of 199284 in words is "one hundred ninety-nine thousand, two hundred eighty-four".

Divisors: 1 2 3 4 6 12 16607 33214 49821 66428 99642 199284