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13806069 = 337612039
BaseRepresentation
bin110100101010…
…100111110101
3221222102100220
4310222213311
512013243234
61211524553
7225230634
oct64524765
927872326
1013806069
11787a782
124759759
132b25094
141b9551b
15132aa49
hexd2a9f5

13806069 has 16 divisors (see below), whose sum is σ = 19224960. Its totient is φ = 8804160.

The previous prime is 13806047. The next prime is 13806071. The reversal of 13806069 is 96060831.

It is not a de Polignac number, because 13806069 - 215 = 13773301 is a prime.

It is a super-2 number, since 2×138060692 = 381215082465522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13806019) 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, 5752 + ... + 7790.

It is an arithmetic number, because the mean of its divisors is an integer number (1201560).

Almost surely, 213806069 is an apocalyptic number.

It is an amenable number.

13806069 is a deficient number, since it is larger than the sum of its proper divisors (5418891).

13806069 is a wasteful number, since it uses less digits than its factorization.

13806069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 13806069 is about 3715.6518943518. The cubic root of 13806069 is about 239.8961877413.

The spelling of 13806069 in words is "thirteen million, eight hundred six thousand, sixty-nine".

Divisors: 1 3 37 61 111 183 2039 2257 6117 6771 75443 124379 226329 373137 4602023 13806069