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12130902 = 2327432239
BaseRepresentation
bin101110010001…
…101001010110
3211211022110200
4232101221112
511101142102
61112001330
7205053030
oct56215126
924738420
1012130902
116936143
124090246
132689764
14187ac50
1510e951c
hexb91a56

12130902 has 48 divisors (see below), whose sum is σ = 30750720. Its totient is φ = 3383856.

The previous prime is 12130901. The next prime is 12130907. The reversal of 12130902 is 20903121.

It is a happy number.

12130902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12130901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4299 + ... + 6537.

It is an arithmetic number, because the mean of its divisors is an integer number (640640).

Almost surely, 212130902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12130902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15375360).

12130902 is an abundant number, since it is smaller than the sum of its proper divisors (18619818).

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

12130902 is a wasteful number, since it uses less digits than its factorization.

12130902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 12130902 is about 3482.9444440014. The cubic root of 12130902 is about 229.7723140617.

The spelling of 12130902 in words is "twelve million, one hundred thirty thousand, nine hundred two".

Divisors: 1 2 3 6 7 9 14 18 21 42 43 63 86 126 129 258 301 387 602 774 903 1806 2239 2709 4478 5418 6717 13434 15673 20151 31346 40302 47019 94038 96277 141057 192554 282114 288831 577662 673939 866493 1347878 1732986 2021817 4043634 6065451 12130902