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258188230 = 2525818823
BaseRepresentation
bin11110110001110…
…10001111000110
3122222211022200001
433120322033012
51012044010410
641341511514
76253364236
oct1730721706
9588738601
10258188230
11122816703
127257259a
134164b701
142640bcc6
1517a0033a
hexf63a3c6

258188230 has 8 divisors (see below), whose sum is σ = 464738832. Its totient is φ = 103275288.

The previous prime is 258188209. The next prime is 258188233. The reversal of 258188230 is 32881852.

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

It is a super-3 number, since 3×2581882303 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 258188230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258188233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12909402 + ... + 12909421.

It is an arithmetic number, because the mean of its divisors is an integer number (58092354).

Almost surely, 2258188230 is an apocalyptic number.

258188230 is a deficient number, since it is larger than the sum of its proper divisors (206550602).

258188230 is a wasteful number, since it uses less digits than its factorization.

258188230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25818830.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 258188230 is about 16068.2366798601. The cubic root of 258188230 is about 636.7644562869.

The spelling of 258188230 in words is "two hundred fifty-eight million, one hundred eighty-eight thousand, two hundred thirty".

Divisors: 1 2 5 10 25818823 51637646 129094115 258188230