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1222230330 = 23357957301
BaseRepresentation
bin100100011011001…
…1100000100111010
310011011211201211000
41020312130010322
510000342332310
6321140345430
742200533506
oct11066340472
93134751730
101222230330
11577a0a812
122a13a5276
131662a8b19
14b8479306
157247c4c0
hex48d9c13a

1222230330 has 64 divisors (see below), whose sum is σ = 3300595200. Its totient is φ = 321796800.

The previous prime is 1222230319. The next prime is 1222230337. The reversal of 1222230330 is 330322221.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1222230337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7321 + ... + 49980.

It is an arithmetic number, because the mean of its divisors is an integer number (51571800).

Almost surely, 21222230330 is an apocalyptic number.

1222230330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222230330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650297600).

1222230330 is an abundant number, since it is smaller than the sum of its proper divisors (2078364870).

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

1222230330 is a wasteful number, since it uses less digits than its factorization.

1222230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57396 (or 57390 counting only the distinct ones).

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

The square root of 1222230330 is about 34960.4108957546. The cubic root of 1222230330 is about 1069.1804741730.

Adding to 1222230330 its reverse (330322221), we get a palindrome (1552552551).

The spelling of 1222230330 in words is "one billion, two hundred twenty-two million, two hundred thirty thousand, three hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 79 90 135 158 237 270 395 474 711 790 1185 1422 2133 2370 3555 4266 7110 10665 21330 57301 114602 171903 286505 343806 515709 573010 859515 1031418 1547127 1719030 2578545 3094254 4526779 5157090 7735635 9053558 13580337 15471270 22633895 27160674 40741011 45267790 67901685 81482022 122223033 135803370 203705055 244446066 407410110 611115165 1222230330