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13255407 = 37111929
BaseRepresentation
bin110010100100…
…001011101111
3220221110000000
4302210023233
511343133112
61152035343
7220445334
oct62441357
926843000
1013255407
117533a90
124532b53
132991549
141a9098b
15126c7dc
hexca42ef

13255407 has 64 divisors (see below), whose sum is σ = 23616000. Its totient is φ = 7348320.

The previous prime is 13255397. The next prime is 13255409. The reversal of 13255407 is 70455231.

It is a happy number.

13255407 is a `hidden beast` number, since 1 + 3 + 255 + 407 = 666.

It is not a de Polignac number, because 13255407 - 27 = 13255279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13255409) 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 63 ways as a sum of consecutive naturals, for example, 457069 + ... + 457097.

It is an arithmetic number, because the mean of its divisors is an integer number (369000).

Almost surely, 213255407 is an apocalyptic number.

13255407 is a deficient number, since it is larger than the sum of its proper divisors (10360593).

13255407 is an equidigital number, since it uses as much as digits as its factorization.

13255407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 13255407 is about 3640.7975774547. The cubic root of 13255407 is about 236.6633579735.

The spelling of 13255407 in words is "thirteen million, two hundred fifty-five thousand, four hundred seven".

Divisors: 1 3 9 11 19 27 29 33 57 81 87 99 171 209 243 261 297 319 513 551 627 729 783 891 957 1539 1653 1881 2187 2349 2673 2871 4617 4959 5643 6061 7047 8019 8613 13851 14877 16929 18183 21141 24057 25839 41553 44631 50787 54549 63423 77517 133893 152361 163647 232551 401679 457083 490941 697653 1205037 1472823 4418469 13255407