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13127124 = 2231093927
BaseRepresentation
bin110010000100…
…110111010100
3220200221000210
4302010313110
511330031444
61145205420
7216402333
oct62046724
926627023
1013127124
11745666a
124490870
13294803a
141a59d1a
1512447b9
hexc84dd4

13127124 has 12 divisors (see below), whose sum is σ = 30629984. Its totient is φ = 4375704.

The previous prime is 13127123. The next prime is 13127131. The reversal of 13127124 is 42172131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×131271242 = 344642769022752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13127124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13127123) 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 3 ways as a sum of consecutive naturals, for example, 546952 + ... + 546975.

Almost surely, 213127124 is an apocalyptic number.

It is an amenable number.

13127124 is an abundant number, since it is smaller than the sum of its proper divisors (17502860).

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

13127124 is a wasteful number, since it uses less digits than its factorization.

13127124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093934 (or 1093932 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 13127124 is about 3623.1373145383. The cubic root of 13127124 is about 235.8974226241.

Adding to 13127124 its reverse (42172131), we get a palindrome (55299255).

The spelling of 13127124 in words is "thirteen million, one hundred twenty-seven thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 12 1093927 2187854 3281781 4375708 6563562 13127124