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12203130 = 2351979271
BaseRepresentation
bin101110100011…
…010001111010
3211221222112210
4232203101322
511111000010
61113315550
7205503432
oct56432172
924858483
1012203130
116985435
124105bb6
1326b35b4
1418992c2
151110b20
hexba347a

12203130 has 64 divisors (see below), whose sum is σ = 31334400. Its totient is φ = 3032640.

The previous prime is 12203089. The next prime is 12203137. The reversal of 12203130 is 3130221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12203137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44895 + ... + 45165.

It is an arithmetic number, because the mean of its divisors is an integer number (489600).

Almost surely, 212203130 is an apocalyptic number.

12203130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12203130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15667200).

12203130 is an abundant number, since it is smaller than the sum of its proper divisors (19131270).

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

12203130 is a wasteful number, since it uses less digits than its factorization.

12203130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12203130 is about 3493.2978687767. The cubic root of 12203130 is about 230.2274372786.

Adding to 12203130 its reverse (3130221), we get a palindrome (15333351).

The spelling of 12203130 in words is "twelve million, two hundred three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 79 95 114 158 190 237 271 285 395 474 542 570 790 813 1185 1355 1501 1626 2370 2710 3002 4065 4503 5149 7505 8130 9006 10298 15010 15447 21409 22515 25745 30894 42818 45030 51490 64227 77235 107045 128454 154470 214090 321135 406771 642270 813542 1220313 2033855 2440626 4067710 6101565 12203130