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13880838 = 232818233
BaseRepresentation
bin110100111100…
…111000000110
3222010012221010
4310330320012
512023141323
61213303050
7225661626
oct64747006
928105833
1013880838
117920974
124794a86
132b5011a
141bb4886
151342c93
hexd3ce06

13880838 has 16 divisors (see below), whose sum is σ = 27863856. Its totient is φ = 4609920.

The previous prime is 13880833. The next prime is 13880861. The reversal of 13880838 is 83808831.

13880838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13880796 and 13880805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880833) 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, 2431 + ... + 5802.

It is an arithmetic number, because the mean of its divisors is an integer number (1741491).

Almost surely, 213880838 is an apocalyptic number.

13880838 is an abundant number, since it is smaller than the sum of its proper divisors (13983018).

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

13880838 is a wasteful number, since it uses less digits than its factorization.

13880838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 13880838 is about 3725.6996658346. The cubic root of 13880838 is about 240.3284738432.

The spelling of 13880838 in words is "thirteen million, eight hundred eighty thousand, eight hundred thirty-eight".

Divisors: 1 2 3 6 281 562 843 1686 8233 16466 24699 49398 2313473 4626946 6940419 13880838