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1230330222 = 234111722389
BaseRepresentation
bin100100101010101…
…0101100101101110
310011202002020210000
41021111111211232
510004431031342
6322030125130
742326430402
oct11125254556
93152066700
101230330222
11581542340
122a40507a6
13167b83864
14b9587102
157302c44c
hex4955596e

1230330222 has 120 divisors (see below), whose sum is σ = 3196127880. Its totient is φ = 350749440.

The previous prime is 1230330151. The next prime is 1230330223. The reversal of 1230330222 is 2220330321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1230330195 and 1230330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230330223) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 513804 + ... + 516192.

It is an arithmetic number, because the mean of its divisors is an integer number (26634399).

Almost surely, 21230330222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1230330222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598063940).

1230330222 is an abundant number, since it is smaller than the sum of its proper divisors (1965797658).

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

1230330222 is a wasteful number, since it uses less digits than its factorization.

1230330222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1230330222 is about 35076.0633766106. The cubic root of 1230330222 is about 1071.5371455229.

Adding to 1230330222 its reverse (2220330321), we get a palindrome (3450660543).

Subtracting 1230330222 from its reverse (2220330321), we obtain a palindrome (990000099).

The spelling of 1230330222 in words is "one billion, two hundred thirty million, three hundred thirty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 9 11 17 18 22 27 33 34 51 54 66 81 99 102 153 162 187 198 289 297 306 374 459 561 578 594 867 891 918 1122 1377 1683 1734 1782 2389 2601 2754 3179 3366 4778 5049 5202 6358 7167 7803 9537 10098 14334 15147 15606 19074 21501 23409 26279 28611 30294 40613 43002 46818 52558 57222 64503 78837 81226 85833 121839 129006 157674 171666 193509 236511 243678 257499 365517 387018 446743 473022 514998 690421 709533 731034 893486 1096551 1340229 1380842 1419066 2071263 2128599 2193102 2680458 3289653 4020687 4142526 4257198 6213789 6579306 7594631 8041374 12062061 12427578 15189262 18641367 22783893 24124122 36186183 37282734 45567786 55924101 68351679 72372366 111848202 136703358 205055037 410110074 615165111 1230330222