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11220230 = 257891801
BaseRepresentation
bin101010110011…
…010100000110
3210010001021002
4222303110012
510333021410
61040253302
7164241020
oct52632406
923101232
1011220230
116373a1a
123911232
13242b0b8
1416c1010
15eb97a5
hexab3506

11220230 has 32 divisors (see below), whose sum is σ = 23353920. Its totient is φ = 3801600.

The previous prime is 11220227. The next prime is 11220247. The reversal of 11220230 is 3202211.

It is a happy number.

It is a super-2 number, since 2×112202302 = 251787122505800, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 5330 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (729810).

Almost surely, 211220230 is an apocalyptic number.

11220230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11220230 is an abundant number, since it is smaller than the sum of its proper divisors (12133690).

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

11220230 is a wasteful number, since it uses less digits than its factorization.

11220230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904.

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

The square root of 11220230 is about 3349.6611768954. The cubic root of 11220230 is about 223.8724161851.

Adding to 11220230 its reverse (3202211), we get a palindrome (14422441).

The spelling of 11220230 in words is "eleven million, two hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 89 178 445 623 890 1246 1801 3115 3602 6230 9005 12607 18010 25214 63035 126070 160289 320578 801445 1122023 1602890 2244046 5610115 11220230