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13481272 = 2373173
BaseRepresentation
bin110011011011…
…010100111000
3221100220211101
4303123110320
511422400042
61200541144
7222406000
oct63332470
927326741
1013481272
117678752
1246217b4
132a402ac
141b0d000
1512b46b7
hexcdb538

13481272 has 64 divisors (see below), whose sum is σ = 31320000. Its totient is φ = 5437824.

The previous prime is 13481269. The next prime is 13481287. The reversal of 13481272 is 27218431.

The cubic root of 13481272 is 238.

It is a perfect power (a cube), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 13481272.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 793008 + ... + 793024.

It is an arithmetic number, because the mean of its divisors is an integer number (489375).

Almost surely, 213481272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13481272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15660000).

13481272 is an abundant number, since it is smaller than the sum of its proper divisors (17838728).

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

13481272 is an frugal number, since it uses more digits than its factorization.

13481272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 26 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 13481272 is about 3671.6851716889.

It can be divided in two parts, 134 and 81272, that added together give a triangular number (81406 = T403).

The spelling of 13481272 in words is "thirteen million, four hundred eighty-one thousand, two hundred seventy-two".

Divisors: 1 2 4 7 8 14 17 28 34 49 56 68 98 119 136 196 238 289 343 392 476 578 686 833 952 1156 1372 1666 2023 2312 2744 3332 4046 4913 5831 6664 8092 9826 11662 14161 16184 19652 23324 28322 34391 39304 46648 56644 68782 99127 113288 137564 198254 240737 275128 396508 481474 793016 962948 1685159 1925896 3370318 6740636 13481272