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228030810 = 23572612543
BaseRepresentation
bin11011001011101…
…11100101011010
3120220002011110120
431211313211122
5431333441220
634343254110
75436141600
oct1545674532
9526064416
10228030810
11107798a17
126444a336
133831cb97
14223db870
1515044a40
hexd97795a

228030810 has 96 divisors (see below), whose sum is σ = 647315712. Its totient is φ = 51246720.

The previous prime is 228030791. The next prime is 228030821. The reversal of 228030810 is 18030822.

It is a super-2 number, since 2×2280308102 = 103996100618512200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88399 + ... + 90941.

It is an arithmetic number, because the mean of its divisors is an integer number (6742872).

Almost surely, 2228030810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228030810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323657856).

228030810 is an abundant number, since it is smaller than the sum of its proper divisors (419284902).

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

228030810 is a wasteful number, since it uses less digits than its factorization.

228030810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 228030810 is about 15100.6890571258. The cubic root of 228030810 is about 610.9389910003.

The spelling of 228030810 in words is "two hundred twenty-eight million, thirty thousand, eight hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 49 61 70 98 105 122 147 183 210 245 294 305 366 427 490 610 735 854 915 1281 1470 1830 2135 2543 2562 2989 4270 5086 5978 6405 7629 8967 12715 12810 14945 15258 17801 17934 25430 29890 35602 38145 44835 53403 76290 89005 89670 106806 124607 155123 178010 249214 267015 310246 373821 465369 534030 623035 747642 775615 930738 1085861 1246070 1551230 1869105 2171722 2326845 3257583 3738210 4653690 5429305 6515166 7601027 10858610 15202054 16287915 22803081 32575830 38005135 45606162 76010270 114015405 228030810