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13806860 = 2251375039
BaseRepresentation
bin110100101010…
…110100001100
3221222110110012
4310222310030
512013304420
61211532352
7225233144
oct64526414
927873405
1013806860
117880331
12475a0b8
132b25552
141b95924
15132adc5
hexd2ad0c

13806860 has 24 divisors (see below), whose sum is σ = 29211840. Its totient is φ = 5481344.

The previous prime is 13806857. The next prime is 13806869. The reversal of 13806860 is 6860831.

It is not an unprimeable number, because it can be changed into a prime (13806869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221 + ... + 5259.

It is an arithmetic number, because the mean of its divisors is an integer number (1217160).

Almost surely, 213806860 is an apocalyptic number.

13806860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13806860 is an abundant number, since it is smaller than the sum of its proper divisors (15404980).

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

13806860 is a wasteful number, since it uses less digits than its factorization.

13806860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5185 (or 5183 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 13806860 is about 3715.7583344453. The cubic root of 13806860 is about 239.9007691627.

The spelling of 13806860 in words is "thirteen million, eight hundred six thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 137 274 548 685 1370 2740 5039 10078 20156 25195 50390 100780 690343 1380686 2761372 3451715 6903430 13806860