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13260144 = 2432312011
BaseRepresentation
bin110010100101…
…010101110000
3220221200111110
4302211111300
511343311034
61152113320
7220465212
oct62452560
926850443
1013260144
1175375a7
124535840
132993751
141a925b2
15126dde9
hexca5570

13260144 has 40 divisors (see below), whose sum is σ = 35747712. Its totient is φ = 4227520.

The previous prime is 13260139. The next prime is 13260151. The reversal of 13260144 is 44106231.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13260144.

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 7 ways as a sum of consecutive naturals, for example, 4902 + ... + 7109.

Almost surely, 213260144 is an apocalyptic number.

It is an amenable number.

13260144 is an abundant number, since it is smaller than the sum of its proper divisors (22487568).

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

13260144 is a wasteful number, since it uses less digits than its factorization.

13260144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12045 (or 12039 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 13260144 is about 3641.4480636143. The cubic root of 13260144 is about 236.6915462394.

Adding to 13260144 its reverse (44106231), we get a palindrome (57366375).

The spelling of 13260144 in words is "thirteen million, two hundred sixty thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 23 24 46 48 69 92 138 184 276 368 552 1104 12011 24022 36033 48044 72066 96088 144132 192176 276253 288264 552506 576528 828759 1105012 1657518 2210024 3315036 4420048 6630072 13260144