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12230757 = 347113753
BaseRepresentation
bin101110101010…
…000001100101
3212000101110000
4232222001211
511112341012
61114051513
7205650120
oct56520145
925011400
1012230757
1169a4170
124119b99
1326c3046
1418a53b7
151118ddc
hexbaa065

12230757 has 80 divisors (see below), whose sum is σ = 23836032. Its totient is φ = 6065280.

The previous prime is 12230731. The next prime is 12230789. The reversal of 12230757 is 75703221.

It is not a de Polignac number, because 12230757 - 26 = 12230693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12230757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12230707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 230743 + ... + 230795.

Almost surely, 212230757 is an apocalyptic number.

12230757 is the 1749-th decagonal number.

It is an amenable number.

12230757 is a deficient number, since it is larger than the sum of its proper divisors (11605275).

12230757 is a wasteful number, since it uses less digits than its factorization.

12230757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 12230757 is about 3497.2499195797. The cubic root of 12230757 is about 230.4010457309.

Adding to 12230757 its reverse (75703221), we get a palindrome (87933978).

The spelling of 12230757 in words is "twelve million, two hundred thirty thousand, seven hundred fifty-seven".

Divisors: 1 3 7 9 11 21 27 33 37 53 63 77 81 99 111 159 189 231 259 297 333 371 407 477 567 583 693 777 891 999 1113 1221 1431 1749 1961 2079 2331 2849 2997 3339 3663 4081 4293 5247 5883 6237 6993 8547 10017 10989 12243 13727 15741 17649 20979 21571 25641 30051 32967 36729 41181 47223 52947 64713 76923 110187 123543 150997 158841 194139 230769 330561 370629 452991 582417 1111887 1358973 1747251 4076919 12230757