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258427660 = 225119310831
BaseRepresentation
bin11110110011101…
…00101100001100
3200000021111002211
433121310230030
51012124141120
641351000204
76255412261
oct1731645414
9600244084
10258427660
1112296a587
1272669064
134170369a
1426471268
1517a4b25a
hexf674b0c

258427660 has 24 divisors (see below), whose sum is σ = 543203136. Its totient is φ = 103274880.

The previous prime is 258427639. The next prime is 258427679. The reversal of 258427660 is 66724852.

It is a super-3 number, since 3×2584276603 (a number of 26 digits) contains 333 as substring.

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, 18445 + ... + 29275.

It is an arithmetic number, because the mean of its divisors is an integer number (22633464).

Almost surely, 2258427660 is an apocalyptic number.

258427660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258427660 is an abundant number, since it is smaller than the sum of its proper divisors (284775476).

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

258427660 is a wasteful number, since it uses less digits than its factorization.

258427660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12033 (or 12031 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 258427660 is about 16075.6853664160. The cubic root of 258427660 is about 636.9612292770.

The spelling of 258427660 in words is "two hundred fifty-eight million, four hundred twenty-seven thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 1193 2386 4772 5965 10831 11930 21662 23860 43324 54155 108310 216620 12921383 25842766 51685532 64606915 129213830 258427660