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204030880 = 2551275193
BaseRepresentation
bin11000010100101…
…00001110100000
3112012220211202021
430022110032200
5404212442010
632125031224
75025143134
oct1412241640
9465824667
10204030880
11a5196469
12583b5514
1333368c41
141d1513c4
1512da38da
hexc2943a0

204030880 has 24 divisors (see below), whose sum is σ = 482023332. Its totient is φ = 81612288.

The previous prime is 204030859. The next prime is 204030943. The reversal of 204030880 is 88030402.

It can be written as a sum of positive squares in 2 ways, for example, as 189007504 + 15023376 = 13748^2 + 3876^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 637437 + ... + 637756.

Almost surely, 2204030880 is an apocalyptic number.

204030880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204030880 is an abundant number, since it is smaller than the sum of its proper divisors (277992452).

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

204030880 is a wasteful number, since it uses less digits than its factorization.

204030880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275208 (or 1275200 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 204030880 is about 14283.9378324046. The cubic root of 204030880 is about 588.7062333454.

The spelling of 204030880 in words is "two hundred four million, thirty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1275193 2550386 5100772 6375965 10201544 12751930 20403088 25503860 40806176 51007720 102015440 204030880