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228831498 = 23278321881
BaseRepresentation
bin11011010001110…
…11000100001010
3120221120211210200
431220323010022
5432040101443
634412353030
75446015140
oct1550730412
9527524720
10228831498
11108195545
1264775776
133854046c
1422569590
1515151dd3
hexda3b10a

228831498 has 48 divisors (see below), whose sum is σ = 573483456. Its totient is φ = 64589760.

The previous prime is 228831487. The next prime is 228831523. The reversal of 228831498 is 894138822.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483 + ... + 21398.

It is an arithmetic number, because the mean of its divisors is an integer number (11947572).

Almost surely, 2228831498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228831498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286741728).

228831498 is an abundant number, since it is smaller than the sum of its proper divisors (344651958).

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

228831498 is a wasteful number, since it uses less digits than its factorization.

228831498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21979 (or 21976 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 228831498 is about 15127.1774630960. The cubic root of 228831498 is about 611.6532220991.

The spelling of 228831498 in words is "two hundred twenty-eight million, eight hundred thirty-one thousand, four hundred ninety-eight".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 83 126 166 249 498 581 747 1162 1494 1743 3486 5229 10458 21881 43762 65643 131286 153167 196929 306334 393858 459501 919002 1378503 1816123 2757006 3632246 5448369 10896738 12712861 16345107 25425722 32690214 38138583 76277166 114415749 228831498