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13805930 = 2541151223
BaseRepresentation
bin110100101010…
…100101101010
3221222102011202
4310222211222
512013242210
61211524202
7225230345
oct64524552
927872152
1013805930
11787a666
124759662
132b24cb8
141b9545c
15132a9a5
hexd2a96a

13805930 has 32 divisors (see below), whose sum is σ = 25740288. Its totient is φ = 5328000.

The previous prime is 13805927. The next prime is 13805933. The reversal of 13805930 is 3950831.

13805930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13805927) and next prime (13805933).

It is a junction number, because it is equal to n+sod(n) for n = 13805893 and 13805902.

It is not an unprimeable number, because it can be changed into a prime (13805933) 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, 61799 + ... + 62021.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 213805930 is an apocalyptic number.

13805930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13805930 is a deficient number, since it is larger than the sum of its proper divisors (11934358).

13805930 is a wasteful number, since it uses less digits than its factorization.

13805930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 13805930 is about 3715.6331896461. The cubic root of 13805930 is about 239.8953826441.

The spelling of 13805930 in words is "thirteen million, eight hundred five thousand, nine hundred thirty".

Divisors: 1 2 5 10 41 82 151 205 223 302 410 446 755 1115 1510 2230 6191 9143 12382 18286 30955 33673 45715 61910 67346 91430 168365 336730 1380593 2761186 6902965 13805930