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13406286 = 2319235113
BaseRepresentation
bin110011001001…
…000001001110
3221020002222010
4303021001032
511413000121
61155202050
7221644245
oct63110116
927202863
1013406286
117627383
1245a6326
132a1511a
141acd95c
15129c376
hexcc904e

13406286 has 32 divisors (see below), whose sum is σ = 29456640. Its totient is φ = 4048704.

The previous prime is 13406279. The next prime is 13406287. The reversal of 13406286 is 68260431.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13406287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66 + ... + 5178.

It is an arithmetic number, because the mean of its divisors is an integer number (920520).

Almost surely, 213406286 is an apocalyptic number.

13406286 is an abundant number, since it is smaller than the sum of its proper divisors (16050354).

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

13406286 is a wasteful number, since it uses less digits than its factorization.

13406286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 13406286 is about 3661.4595450448. The cubic root of 13406286 is about 237.5579086862.

It can be divided in two parts, 1340 and 6286, that added together give a triangular number (7626 = T123).

The spelling of 13406286 in words is "thirteen million, four hundred six thousand, two hundred eighty-six".

Divisors: 1 2 3 6 19 23 38 46 57 69 114 138 437 874 1311 2622 5113 10226 15339 30678 97147 117599 194294 235198 291441 352797 582882 705594 2234381 4468762 6703143 13406286