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203080 = 2355077
BaseRepresentation
bin110001100101001000
3101022120111
4301211020
522444310
64204104
71504033
oct614510
9338514
10203080
11129639
1299634
1371587
145401a
154028a
hex31948

203080 has 16 divisors (see below), whose sum is σ = 457020. Its totient is φ = 81216.

The previous prime is 203057. The next prime is 203117. The reversal of 203080 is 80302.

It can be written as a sum of positive squares in 2 ways, for example, as 191844 + 11236 = 438^2 + 106^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 203080.

It is an unprimeable number.

203080 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2499 + ... + 2578.

2203080 is an apocalyptic number.

203080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203080 is an abundant number, since it is smaller than the sum of its proper divisors (253940).

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

203080 is a wasteful number, since it uses less digits than its factorization.

203080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5088 (or 5084 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 203080 is about 450.6439836501. The cubic root of 203080 is about 58.7790259468.

Adding to 203080 its reverse (80302), we get a palindrome (283382).

The spelling of 203080 in words is "two hundred three thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 5077 10154 20308 25385 40616 50770 101540 203080