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12230370 = 2325135893
BaseRepresentation
bin101110101001…
…111011100010
3212000100220200
4232221323202
511112332440
61114050030
7205646025
oct56517342
925010820
1012230370
1169a3949
124119916
1326c2b09
1418a51bc
151118c30
hexba9ee2

12230370 has 24 divisors (see below), whose sum is σ = 31799196. Its totient is φ = 3261408.

The previous prime is 12230369. The next prime is 12230371. The reversal of 12230370 is 7303221.

It is an interprime number because it is at equal distance from previous prime (12230369) and next prime (12230371).

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 1121481 = 3333^2 + 1059^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12230371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67857 + ... + 68036.

Almost surely, 212230370 is an apocalyptic number.

12230370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12230370 is an abundant number, since it is smaller than the sum of its proper divisors (19568826).

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

12230370 is a wasteful number, since it uses less digits than its factorization.

12230370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135906 (or 135903 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 12230370 is about 3497.1945899535. The cubic root of 12230370 is about 230.3986156239.

Adding to 12230370 its reverse (7303221), we get a palindrome (19533591).

The spelling of 12230370 in words is "twelve million, two hundred thirty thousand, three hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 135893 271786 407679 679465 815358 1223037 1358930 2038395 2446074 4076790 6115185 12230370