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13255389 = 327210403
BaseRepresentation
bin110010100100…
…001011011101
3220221102222100
4302210023131
511343133024
61152035313
7220445310
oct62441335
926842870
1013255389
117533a74
124532b39
132991534
141a90977
15126c7c9
hexca42dd

13255389 has 12 divisors (see below), whose sum is σ = 21882016. Its totient is φ = 7574472.

The previous prime is 13255373. The next prime is 13255397. The reversal of 13255389 is 98355231.

13255389 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13255389 - 24 = 13255373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105139 + ... + 105264.

Almost surely, 213255389 is an apocalyptic number.

It is an amenable number.

13255389 is a deficient number, since it is larger than the sum of its proper divisors (8626627).

13255389 is a wasteful number, since it uses less digits than its factorization.

13255389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210416 (or 210413 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 13255389 is about 3640.7951054680. The cubic root of 13255389 is about 236.6632508489.

The spelling of 13255389 in words is "thirteen million, two hundred fifty-five thousand, three hundred eighty-nine".

Divisors: 1 3 7 9 21 63 210403 631209 1472821 1893627 4418463 13255389