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12223254460 = 2257927128547
BaseRepresentation
bin10110110001001000…
…00000111110111100
31011112212012122220011
423120210000332330
5200013123120320
65340522433004
7611621643244
oct133044007674
934485178804
1012223254460
115202787a9a
122451662764
1311ca4a1661
1483d534b24
154b817005a
hex2d8900fbc

12223254460 has 48 divisors (see below), whose sum is σ = 26090588160. Its totient is φ = 4809430080.

The previous prime is 12223254451. The next prime is 12223254467. The reversal of 12223254460 is 6445232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223254467) 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, 413907 + ... + 442453.

It is an arithmetic number, because the mean of its divisors is an integer number (543553920).

Almost surely, 212223254460 is an apocalyptic number.

12223254460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223254460 is an abundant number, since it is smaller than the sum of its proper divisors (13867333700).

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

12223254460 is a wasteful number, since it uses less digits than its factorization.

12223254460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28906 (or 28904 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 12223254460 its reverse (6445232221), we get a palindrome (18668486681).

The spelling of 12223254460 in words is "twelve billion, two hundred twenty-three million, two hundred fifty-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 79 158 271 316 395 542 790 1084 1355 1580 2710 5420 21409 28547 42818 57094 85636 107045 114188 142735 214090 285470 428180 570940 2255213 4510426 7736237 9020852 11276065 15472474 22552130 30944948 38681185 45104260 77362370 154724740 611162723 1222325446 2444650892 3055813615 6111627230 12223254460