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13255970 = 2572132081
BaseRepresentation
bin110010100100…
…010100100010
3220221110202212
4302210110202
511343142340
61152042122
7220450100
oct62442442
926843685
1013255970
117534452
124533342
132991890
141a90c70
15126ca65
hexca4522

13255970 has 48 divisors (see below), whose sum is σ = 29905848. Its totient is φ = 4193280.

The previous prime is 13255951. The next prime is 13255999. The reversal of 13255970 is 7955231.

It can be written as a sum of positive squares in 4 ways, for example, as 7491169 + 5764801 = 2737^2 + 2401^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5330 + ... + 7410.

Almost surely, 213255970 is an apocalyptic number.

13255970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13255970 is an abundant number, since it is smaller than the sum of its proper divisors (16649878).

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

13255970 is a wasteful number, since it uses less digits than its factorization.

13255970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2108 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 13255970 is about 3640.8748948570. The cubic root of 13255970 is about 236.6667085455. Note that the first 3 decimals are identical.

The spelling of 13255970 in words is "thirteen million, two hundred fifty-five thousand, nine hundred seventy".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 130 182 245 455 490 637 910 1274 2081 3185 4162 6370 10405 14567 20810 27053 29134 54106 72835 101969 135265 145670 189371 203938 270530 378742 509845 946855 1019690 1325597 1893710 2651194 6627985 13255970