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228930284 = 221122812
BaseRepresentation
bin11011010010100…
…11001011101100
3120221202212022102
431221103023230
5432101232114
634414434232
75446606142
oct1551231354
9527685272
10228930284
11108252790
1264802978
133857640b
1422593592
15151712de
hexda532ec

228930284 has 18 divisors (see below), whose sum is σ = 437240412. Its totient is φ = 104013600.

The previous prime is 228930277. The next prime is 228930307. The reversal of 228930284 is 482039822.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99224 + ... + 101504.

It is an arithmetic number, because the mean of its divisors is an integer number (24291134).

Almost surely, 2228930284 is an apocalyptic number.

It is an amenable number.

228930284 is a deficient number, since it is larger than the sum of its proper divisors (208310128).

228930284 is an equidigital number, since it uses as much as digits as its factorization.

228930284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 228930284 is about 15130.4422936013. The cubic root of 228930284 is about 611.7412258384.

The spelling of 228930284 in words is "two hundred twenty-eight million, nine hundred thirty thousand, two hundred eighty-four".

Divisors: 1 2 4 11 22 44 2281 4562 9124 25091 50182 100364 5202961 10405922 20811844 57232571 114465142 228930284