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284249212 = 221321992113
BaseRepresentation
bin10000111100010…
…100110001111100
3201210212100121121
4100330110301330
51040231433322
644112240324
710021035622
oct2074246174
9653770547
10284249212
111364a6705
127b2400a4
1346b74800
1429a73512
1519e4bec7
hex10f14c7c

284249212 has 36 divisors (see below), whose sum is σ = 541606800. Its totient is φ = 130470912.

The previous prime is 284249209. The next prime is 284249233. The reversal of 284249212 is 212942482.

It is a super-2 number, since 2×2842492122 = 161595229045241888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133468 + ... + 135580.

Almost surely, 2284249212 is an apocalyptic number.

It is an amenable number.

284249212 is a deficient number, since it is larger than the sum of its proper divisors (257357588).

284249212 is a wasteful number, since it uses less digits than its factorization.

284249212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2327 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 284249212 is about 16859.6919307560. The cubic root of 284249212 is about 657.5060547761.

It can be divided in two parts, 28424 and 9212, that added together give a square (37636 = 1942).

The spelling of 284249212 in words is "two hundred eighty-four million, two hundred forty-nine thousand, two hundred twelve".

Divisors: 1 2 4 13 26 52 169 199 338 398 676 796 2113 2587 4226 5174 8452 10348 27469 33631 54938 67262 109876 134524 357097 420487 714194 840974 1428388 1681948 5466331 10932662 21865324 71062303 142124606 284249212