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13244142 = 232207357
BaseRepresentation
bin110010100001…
…011011101110
3220220212112210
4302201123232
511342303032
61151511250
7220400442
oct62413356
926825483
1013244142
11752657a
124528526
132989392
141a8a822
1512692cc
hexca16ee

13244142 has 8 divisors (see below), whose sum is σ = 26488296. Its totient is φ = 4414712.

The previous prime is 13244141. The next prime is 13244149. The reversal of 13244142 is 24144231.

It is a sphenic number, since it is the product of 3 distinct primes.

13244142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13244141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103673 + ... + 1103684.

It is an arithmetic number, because the mean of its divisors is an integer number (3311037).

Almost surely, 213244142 is an apocalyptic number.

13244142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13244142 is a wasteful number, since it uses less digits than its factorization.

13244142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207362.

The product of its digits is 768, while the sum is 21.

The square root of 13244142 is about 3639.2501974995. The cubic root of 13244142 is about 236.5962968285.

Adding to 13244142 its reverse (24144231), we get a palindrome (37388373).

The spelling of 13244142 in words is "thirteen million, two hundred forty-four thousand, one hundred forty-two".

Divisors: 1 2 3 6 2207357 4414714 6622071 13244142