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204148 = 22723317
BaseRepresentation
bin110001110101110100
3101101001001
4301311310
523013043
64213044
71510120
oct616564
9341031
10204148
1112a41a
129a184
1371bc9
1454580
154074d
hex31d74

204148 has 24 divisors (see below), whose sum is σ = 427392. Its totient is φ = 83424.

The previous prime is 204143. The next prime is 204151. The reversal of 204148 is 841402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204143) by changing a digit.

204148 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 7 ways as a sum of consecutive naturals, for example, 486 + ... + 802.

It is an arithmetic number, because the mean of its divisors is an integer number (17808).

2204148 is an apocalyptic number.

204148 is a gapful number since it is divisible by the number (28) 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 204148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213696).

204148 is an abundant number, since it is smaller than the sum of its proper divisors (223244).

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

204148 is a wasteful number, since it uses less digits than its factorization.

204148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 204148 is about 451.8274006742. The cubic root of 204148 is about 58.8818856959.

The spelling of 204148 in words is "two hundred four thousand, one hundred forty-eight".

Divisors: 1 2 4 7 14 23 28 46 92 161 317 322 634 644 1268 2219 4438 7291 8876 14582 29164 51037 102074 204148