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220122330 = 23510371237
BaseRepresentation
bin11010001111011…
…00110011011010
3120100012101001220
431013230303122
5422322403310
633501552510
75312003031
oct1507546332
9510171056
10220122330
1110328718a
1261875736
13367b12cc
142133d718
15144d1670
hexd1eccda

220122330 has 32 divisors (see below), whose sum is σ = 533430144. Its totient is φ = 58128576.

The previous prime is 220122311. The next prime is 220122337. The reversal of 220122330 is 33221022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (220122337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32529 + ... + 38708.

It is an arithmetic number, because the mean of its divisors is an integer number (16669692).

Almost surely, 2220122330 is an apocalyptic number.

220122330 is an abundant number, since it is smaller than the sum of its proper divisors (313307814).

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

220122330 is a wasteful number, since it uses less digits than its factorization.

220122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71350.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 220122330 is about 14836.5201445622. The cubic root of 220122330 is about 603.7929443196.

Adding to 220122330 its reverse (33221022), we get a palindrome (253343352).

It can be divided in two parts, 22012 and 2330, that added together give a palindrome (24342).

The spelling of 220122330 in words is "two hundred twenty million, one hundred twenty-two thousand, three hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 103 206 309 515 618 1030 1545 3090 71237 142474 213711 356185 427422 712370 1068555 2137110 7337411 14674822 22012233 36687055 44024466 73374110 110061165 220122330