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12745124 = 2271923957
BaseRepresentation
bin110000100111…
…100110100100
3212222112000122
4300213212210
511230320444
61133101112
7213221540
oct60474644
925875018
1012745124
117215667
124327798
1328431c2
14199aa20
1511bb4ee
hexc279a4

12745124 has 24 divisors (see below), whose sum is σ = 26832960. Its totient is φ = 5174496.

The previous prime is 12745099. The next prime is 12745127. The reversal of 12745124 is 42154721.

It is a junction number, because it is equal to n+sod(n) for n = 12745093 and 12745102.

It is not an unprimeable number, because it can be changed into a prime (12745127) 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 7 ways as a sum of consecutive naturals, for example, 11447 + ... + 12510.

It is an arithmetic number, because the mean of its divisors is an integer number (1118040).

Almost surely, 212745124 is an apocalyptic number.

12745124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12745124 is an abundant number, since it is smaller than the sum of its proper divisors (14087836).

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

12745124 is a wasteful number, since it uses less digits than its factorization.

12745124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23987 (or 23985 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 12745124 is about 3570.0313724112. The cubic root of 12745124 is about 233.5866518691.

Adding to 12745124 its reverse (42154721), we get a palindrome (54899845).

The spelling of 12745124 in words is "twelve million, seven hundred forty-five thousand, one hundred twenty-four".

Divisors: 1 2 4 7 14 19 28 38 76 133 266 532 23957 47914 95828 167699 335398 455183 670796 910366 1820732 3186281 6372562 12745124