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258092891 = 761604433
BaseRepresentation
bin11110110001000…
…10111101011011
3122222122110212222
433120202331123
51012032433031
641335454255
76252516260
oct1730427533
9588573788
10258092891
11122761011
127252738b
13416171b4
14263c5267
15179d1e7b
hexf622f5b

258092891 has 8 divisors (see below), whose sum is σ = 299799264. Its totient is φ = 217595520.

The previous prime is 258092873. The next prime is 258092893. The reversal of 258092891 is 198290852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258092891 - 218 = 257830747 is a prime.

It is a super-2 number, since 2×2580928912 = 133223880769475762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258092893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301790 + ... + 302643.

It is an arithmetic number, because the mean of its divisors is an integer number (37474908).

Almost surely, 2258092891 is an apocalyptic number.

258092891 is a deficient number, since it is larger than the sum of its proper divisors (41706373).

258092891 is an equidigital number, since it uses as much as digits as its factorization.

258092891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604501.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 258092891 is about 16065.2697145115. The cubic root of 258092891 is about 636.6860690827.

The spelling of 258092891 in words is "two hundred fifty-eight million, ninety-two thousand, eight hundred ninety-one".

Divisors: 1 7 61 427 604433 4231031 36870413 258092891