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13800386 = 225726849
BaseRepresentation
bin110100101001…
…001111000010
3221222010120102
4310221033002
512013103021
61211442402
7225205235
oct64511702
927863512
1013800386
117876486
124756402
132b22612
141b9341c
15132900b
hexd293c2

13800386 has 8 divisors (see below), whose sum is σ = 20781900. Its totient is φ = 6873088.

The previous prime is 13800373. The next prime is 13800389. The reversal of 13800386 is 68300831.

It can be written as a sum of positive squares in 2 ways, for example, as 13184161 + 616225 = 3631^2 + 785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13800389) 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 3 ways as a sum of consecutive naturals, for example, 12911 + ... + 13938.

Almost surely, 213800386 is an apocalyptic number.

13800386 is a deficient number, since it is larger than the sum of its proper divisors (6981514).

13800386 is a wasteful number, since it uses less digits than its factorization.

13800386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27108.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 13800386 is about 3714.8870776916. The cubic root of 13800386 is about 239.8632670226.

The spelling of 13800386 in words is "thirteen million, eight hundred thousand, three hundred eighty-six".

Divisors: 1 2 257 514 26849 53698 6900193 13800386