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12223230 = 2352111931
BaseRepresentation
bin101110101000…
…001011111110
3212000000010020
4232220023332
511112120410
61113553010
7205616145
oct56501376
925000106
1012223230
116999548
124115766
1326bc7a6
1418a275c
151116a70
hexba82fe

12223230 has 32 divisors (see below), whose sum is σ = 29490048. Its totient is φ = 3242400.

The previous prime is 12223199. The next prime is 12223271. The reversal of 12223230 is 3232221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5365 + ... + 7295.

It is an arithmetic number, because the mean of its divisors is an integer number (921564).

Almost surely, 212223230 is an apocalyptic number.

12223230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12223230 is an abundant number, since it is smaller than the sum of its proper divisors (17266818).

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

12223230 is a wasteful number, since it uses less digits than its factorization.

12223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152.

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

The square root of 12223230 is about 3496.1736226910. The cubic root of 12223230 is about 230.3537718909.

Adding to 12223230 its reverse (3232221), we get a palindrome (15455451).

The spelling of 12223230 in words is "twelve million, two hundred twenty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 211 422 633 1055 1266 1931 2110 3165 3862 5793 6330 9655 11586 19310 28965 57930 407441 814882 1222323 2037205 2444646 4074410 6111615 12223230