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258080242 = 2789207127
BaseRepresentation
bin11110110000111…
…11110111110010
3122222121211112111
433120133313302
51012032031432
641335315534
76252434350
oct1730376762
9588554474
10258080242
11122752562
127251bbaa
1341611504
14263c07d0
15179cd347
hexf61fdf2

258080242 has 16 divisors (see below), whose sum is σ = 447396480. Its totient is φ = 109362528.

The previous prime is 258080233. The next prime is 258080269. The reversal of 258080242 is 242080852.

It is a super-2 number, since 2×2580802422 = 133210822621557128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102318 + ... + 104809.

It is an arithmetic number, because the mean of its divisors is an integer number (27962280).

Almost surely, 2258080242 is an apocalyptic number.

258080242 is a deficient number, since it is larger than the sum of its proper divisors (189316238).

258080242 is a wasteful number, since it uses less digits than its factorization.

258080242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207225.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 258080242 is about 16064.8760343801. The cubic root of 258080242 is about 636.6756676937.

The spelling of 258080242 in words is "two hundred fifty-eight million, eighty thousand, two hundred forty-two".

Divisors: 1 2 7 14 89 178 623 1246 207127 414254 1449889 2899778 18434303 36868606 129040121 258080242