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13841893 = 131762633
BaseRepresentation
bin110100110011…
…010111100101
3222001020111201
4310303113211
512020420033
61212402501
7225440242
oct64632745
928036451
1013841893
1178a468a
124776431
132b38490
141ba45c9
15133647d
hexd335e5

13841893 has 8 divisors (see below), whose sum is σ = 15783768. Its totient is φ = 12025344.

The previous prime is 13841881. The next prime is 13841909. The reversal of 13841893 is 39814831.

13841893 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 431649 + 13410244 = 657^2 + 3662^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13841893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13841873) 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, 31096 + ... + 31537.

It is an arithmetic number, because the mean of its divisors is an integer number (1972971).

Almost surely, 213841893 is an apocalyptic number.

13841893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13841893 is a deficient number, since it is larger than the sum of its proper divisors (1941875).

13841893 is a wasteful number, since it uses less digits than its factorization.

13841893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62663.

The product of its digits is 20736, while the sum is 37.

The square root of 13841893 is about 3720.4694596247. The cubic root of 13841893 is about 240.1035028105.

The spelling of 13841893 in words is "thirteen million, eight hundred forty-one thousand, eight hundred ninety-three".

Divisors: 1 13 17 221 62633 814229 1064761 13841893