Search a number
-
+
258472250 = 2531761997
BaseRepresentation
bin11110110011111…
…11100100111010
3200000100202021022
433121333210322
51012132103000
641351542442
76255656261
oct1731774472
9600322238
10258472250
111229a0033
127268aa22
134171aa7a
14264835d8
1517a59585
hexf67f93a

258472250 has 64 divisors (see below), whose sum is σ = 521243424. Its totient is φ = 95616000.

The previous prime is 258472213. The next prime is 258472261. The reversal of 258472250 is 52274852.

It can be written as a sum of positive squares in 16 ways, for example, as 7027801 + 251444449 = 2651^2 + 15857^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 258472250.

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 31 ways as a sum of consecutive naturals, for example, 258752 + ... + 259748.

Almost surely, 2258472250 is an apocalyptic number.

258472250 is an abundant number, since it is smaller than the sum of its proper divisors (262771174).

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

258472250 is a wasteful number, since it uses less digits than its factorization.

258472250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 258472250 is about 16077.0721837031. The cubic root of 258472250 is about 636.9978616662.

The spelling of 258472250 in words is "two hundred fifty-eight million, four hundred seventy-two thousand, two hundred fifty".

Divisors: 1 2 5 10 17 25 34 50 61 85 122 125 170 250 305 425 610 850 997 1037 1525 1994 2074 2125 3050 4250 4985 5185 7625 9970 10370 15250 16949 24925 25925 33898 49850 51850 60817 84745 121634 124625 129625 169490 249250 259250 304085 423725 608170 847450 1033889 1520425 2067778 2118625 3040850 4237250 5169445 7602125 10338890 15204250 25847225 51694450 129236125 258472250