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13124445 = 351018663
BaseRepresentation
bin110010000100…
…001101011101
3220200210100120
4302010031131
511324440240
61145145153
7216361455
oct62041535
926623316
1013124445
117454654
12448b1b9
132946a59
141a58d65
151243ad0
hexc8435d

13124445 has 16 divisors (see below), whose sum is σ = 21209472. Its totient is φ = 6929600.

The previous prime is 13124437. The next prime is 13124483. The reversal of 13124445 is 54442131.

It is not a de Polignac number, because 13124445 - 23 = 13124437 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2817 + ... + 5846.

It is an arithmetic number, because the mean of its divisors is an integer number (1325592).

Almost surely, 213124445 is an apocalyptic number.

13124445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13124445 is a deficient number, since it is larger than the sum of its proper divisors (8085027).

13124445 is a wasteful number, since it uses less digits than its factorization.

13124445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772.

The product of its digits is 1920, while the sum is 24.

The square root of 13124445 is about 3622.7675884605. The cubic root of 13124445 is about 235.8813741180.

Adding to 13124445 its reverse (54442131), we get a palindrome (67566576).

The spelling of 13124445 in words is "thirteen million, one hundred twenty-four thousand, four hundred forty-five".

Divisors: 1 3 5 15 101 303 505 1515 8663 25989 43315 129945 874963 2624889 4374815 13124445