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1222130 = 257131779
BaseRepresentation
bin100101010010111110010
32022002110002
410222113302
5303102010
642110002
713250030
oct4522762
92262402
101222130
11765228
124ab302
1333a370
1423b550
151921a5
hex12a5f2

1222130 has 64 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 359424.

The previous prime is 1222129. The next prime is 1222157. The reversal of 1222130 is 312221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15431 + ... + 15509.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

21222130 is an apocalyptic number.

1222130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1105×1106.

1222130 is an abundant number, since it is smaller than the sum of its proper divisors (1680910).

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

1222130 is a wasteful number, since it uses less digits than its factorization.

1222130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1222130 is about 1105.4998869290. The cubic root of 1222130 is about 106.9151217873.

Adding to 1222130 its reverse (312221), we get a palindrome (1534351).

Subtracting from 1222130 its reverse (312221), we obtain a palindrome (909909).

The spelling of 1222130 in words is "one million, two hundred twenty-two thousand, one hundred thirty".

Divisors: 1 2 5 7 10 13 14 17 26 34 35 65 70 79 85 91 119 130 158 170 182 221 238 395 442 455 553 595 790 910 1027 1105 1106 1190 1343 1547 2054 2210 2686 2765 3094 5135 5530 6715 7189 7735 9401 10270 13430 14378 15470 17459 18802 34918 35945 47005 71890 87295 94010 122213 174590 244426 611065 1222130