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204086680 = 2357728881
BaseRepresentation
bin11000010101000…
…01110110011000
3112020000200021221
430022201312120
5404221233210
632130141424
75025464620
oct1412416630
9466020257
10204086680
11a5224386
1258421874
1333388465
141d167880
1512db51da
hexc2a1d98

204086680 has 32 divisors (see below), whose sum is σ = 524795040. Its totient is φ = 69972480.

The previous prime is 204086653. The next prime is 204086693. The reversal of 204086680 is 86680402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364161 + ... + 364720.

It is an arithmetic number, because the mean of its divisors is an integer number (16399845).

Almost surely, 2204086680 is an apocalyptic number.

204086680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204086680 is an abundant number, since it is smaller than the sum of its proper divisors (320708360).

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

204086680 is a wasteful number, since it uses less digits than its factorization.

204086680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728899 (or 728895 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 204086680 is about 14285.8909417649. The cubic root of 204086680 is about 588.7598964864.

The spelling of 204086680 in words is "two hundred four million, eighty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 728881 1457762 2915524 3644405 5102167 5831048 7288810 10204334 14577620 20408668 25510835 29155240 40817336 51021670 102043340 204086680