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405680230 = 25179226637
BaseRepresentation
bin11000001011100…
…011000001100110
31001021100200122201
4120023203001212
51312323231410
6104131045114
713024140124
oct3013430146
91037320581
10405680230
11198aa561a
12b3a4079a
136607cb97
143bc42914
152593683a
hex182e3066

405680230 has 16 divisors (see below), whose sum is σ = 734307120. Its totient is φ = 161364832.

The previous prime is 405680227. The next prime is 405680293. The reversal of 405680230 is 32086504.

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, 111529 + ... + 115108.

It is an arithmetic number, because the mean of its divisors is an integer number (45894195).

Almost surely, 2405680230 is an apocalyptic number.

405680230 is a deficient number, since it is larger than the sum of its proper divisors (328626890).

405680230 is a wasteful number, since it uses less digits than its factorization.

405680230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226823.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 405680230 is about 20141.5051572617. The cubic root of 405680230 is about 740.2776107185.

The spelling of 405680230 in words is "four hundred five million, six hundred eighty thousand, two hundred thirty".

Divisors: 1 2 5 10 179 358 895 1790 226637 453274 1133185 2266370 40568023 81136046 202840115 405680230