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202980 = 223517199
BaseRepresentation
bin110001100011100100
3101022102210
4301203210
522443410
64203420
71503531
oct614344
9338383
10202980
11129558
1299570
137150b
1453d88
1540220
hex318e4

202980 has 48 divisors (see below), whose sum is σ = 604800. Its totient is φ = 50688.

The previous prime is 202973. The next prime is 202981. The reversal of 202980 is 89202.

202980 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (202981) by changing a digit.

202980 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 15 ways as a sum of consecutive naturals, for example, 921 + ... + 1119.

It is an arithmetic number, because the mean of its divisors is an integer number (12600).

2202980 is an apocalyptic number.

202980 is a gapful number since it is divisible by the number (20) 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 202980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302400).

202980 is an abundant number, since it is smaller than the sum of its proper divisors (401820).

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

202980 is a wasteful number, since it uses less digits than its factorization.

202980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 202980 is about 450.5330176580. The cubic root of 202980 is about 58.7693764365.

The spelling of 202980 in words is "two hundred two thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 199 204 255 340 398 510 597 796 995 1020 1194 1990 2388 2985 3383 3980 5970 6766 10149 11940 13532 16915 20298 33830 40596 50745 67660 101490 202980