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228850839 = 357197397
BaseRepresentation
bin11011010001111…
…11110010010111
3120221121211100000
431220333302113
5432041211324
634413022343
75446125420
oct1550776227
9527554300
10228850839
111081a9028
12647849b3
13385491c9
1422572647
15151579c9
hexda3fc97

228850839 has 96 divisors (see below), whose sum is σ = 422356480. Its totient is φ = 120932352.

The previous prime is 228850823. The next prime is 228850847. The reversal of 228850839 is 938058822.

It is not a de Polignac number, because 228850839 - 24 = 228850823 is a prime.

It is a super-2 number, since 2×2288508392 = 104745413022007842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 228850794 and 228850803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228850819) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2359239 + ... + 2359335.

Almost surely, 2228850839 is an apocalyptic number.

228850839 is a deficient number, since it is larger than the sum of its proper divisors (193505641).

228850839 is an equidigital number, since it uses as much as digits as its factorization.

228850839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 228850839 is about 15127.8167294557. The cubic root of 228850839 is about 611.6704540679.

The spelling of 228850839 in words is "two hundred twenty-eight million, eight hundred fifty thousand, eight hundred thirty-nine".

Divisors: 1 3 7 9 19 21 27 57 63 73 81 97 133 171 189 219 243 291 399 511 513 567 657 679 873 1197 1387 1533 1539 1701 1843 1971 2037 2619 3591 4161 4599 4617 5529 5913 6111 7081 7857 9709 10773 12483 12901 13797 16587 17739 18333 21243 23571 29127 32319 37449 38703 41391 49567 49761 54999 63729 87381 112347 116109 124173 134539 148701 149283 164997 191187 262143 337041 348327 403617 446103 447849 573561 786429 941773 1044981 1210851 1338309 1720683 2359287 2825319 3134943 3632553 4014927 8475957 10897659 12044781 25427871 32692977 76283613 228850839