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13271888 = 247711669
BaseRepresentation
bin110010101000…
…001101010000
3220222021121102
4302220031100
511344200023
61152243532
7220544360
oct62501520
926867542
1013271888
117545403
1245405a8
132998bb6
141a969a0
151272628
hexca8350

13271888 has 40 divisors (see below), whose sum is σ = 29819520. Its totient is φ = 5604480.

The previous prime is 13271887. The next prime is 13271891. The reversal of 13271888 is 88817231.

It is a super-2 number, since 2×132718882 = 352286022169088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13271887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7118 + ... + 8786.

It is an arithmetic number, because the mean of its divisors is an integer number (745488).

Almost surely, 213271888 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 13271888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14909760).

13271888 is an abundant number, since it is smaller than the sum of its proper divisors (16547632).

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

13271888 is a wasteful number, since it uses less digits than its factorization.

13271888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755 (or 1749 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The square root of 13271888 is about 3643.0602520409. The cubic root of 13271888 is about 236.7614018231.

The spelling of 13271888 in words is "thirteen million, two hundred seventy-one thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 71 112 142 284 497 568 994 1136 1669 1988 3338 3976 6676 7952 11683 13352 23366 26704 46732 93464 118499 186928 236998 473996 829493 947992 1658986 1895984 3317972 6635944 13271888