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12215354030 = 25111912746021
BaseRepresentation
bin10110110000001011…
…11000001010101110
31011112022100021112122
423120011320022232
5200004112312110
65340041232542
7611464540025
oct133005701256
934468307478
1012215354030
1151a9281310
12244aa92752
1311c8966649
1483c4798bc
154b760e255
hex2d81782ae

12215354030 has 64 divisors (see below), whose sum is σ = 25448325120. Its totient is φ = 4174934400.

The previous prime is 12215353991. The next prime is 12215354033. The reversal of 12215354030 is 3045351221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215354033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242420 + ... + 288440.

It is an arithmetic number, because the mean of its divisors is an integer number (397630080).

Almost surely, 212215354030 is an apocalyptic number.

12215354030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215354030 is an abundant number, since it is smaller than the sum of its proper divisors (13232971090).

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

12215354030 is a wasteful number, since it uses less digits than its factorization.

12215354030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46185.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 12215354030 in words is "twelve billion, two hundred fifteen million, three hundred fifty-four thousand, thirty".

Divisors: 1 2 5 10 11 19 22 38 55 95 110 127 190 209 254 418 635 1045 1270 1397 2090 2413 2794 4826 6985 12065 13970 24130 26543 46021 53086 92042 132715 230105 265430 460210 506231 874399 1012462 1748798 2531155 4371995 5062310 5844667 8743990 9618389 11689334 19236778 29223335 48091945 58446670 64291337 96183890 111048673 128582674 222097346 321456685 555243365 642913370 1110486730 1221535403 2443070806 6107677015 12215354030