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258080990 = 25194333137
BaseRepresentation
bin11110110001000…
…00000011011110
3122222121212120012
433120200003132
51012032042430
641335323222
76252436466
oct1730400336
9588555505
10258080990
11122753082
1272520512
134161195b
14263c0ba6
15179cd695
hexf6200de

258080990 has 32 divisors (see below), whose sum is σ = 490281120. Its totient is φ = 97542144.

The previous prime is 258080989. The next prime is 258081017. The reversal of 258080990 is 99080852.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80702 + ... + 83838.

It is an arithmetic number, because the mean of its divisors is an integer number (15321285).

Almost surely, 2258080990 is an apocalyptic number.

258080990 is a deficient number, since it is larger than the sum of its proper divisors (232200130).

258080990 is a wasteful number, since it uses less digits than its factorization.

258080990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 258080990 is about 16064.8993149662. The cubic root of 258080990 is about 636.6762827905.

The spelling of 258080990 in words is "two hundred fifty-eight million, eighty thousand, nine hundred ninety".

Divisors: 1 2 5 10 19 38 95 190 433 866 2165 3137 4330 6274 8227 15685 16454 31370 41135 59603 82270 119206 298015 596030 1358321 2716642 6791605 13583210 25808099 51616198 129040495 258080990