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13838228 = 229773541
BaseRepresentation
bin110100110010…
…011110010100
3222001001110222
4310302132110
512020310403
61212333512
7225423455
oct64623624
928031428
1013838228
1178a1958
124774298
132b36901
141ba312c
151335338
hexd32794

13838228 has 12 divisors (see below), whose sum is σ = 24248532. Its totient is φ = 6910080.

The previous prime is 13838207. The next prime is 13838243. The reversal of 13838228 is 82283831.

It is a happy number.

13838228 is digitally balanced in base 2, 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 2 ways, for example, as 9909904 + 3928324 = 3148^2 + 1982^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138 + ... + 5678.

It is an arithmetic number, because the mean of its divisors is an integer number (2020711).

Almost surely, 213838228 is an apocalyptic number.

It is an amenable number.

13838228 is a deficient number, since it is larger than the sum of its proper divisors (10410304).

13838228 is a wasteful number, since it uses less digits than its factorization.

13838228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522 (or 4520 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 13838228 is about 3719.9768816486. The cubic root of 13838228 is about 240.0823097310.

The spelling of 13838228 in words is "thirteen million, eight hundred thirty-eight thousand, two hundred twenty-eight".

Divisors: 1 2 4 977 1954 3541 3908 7082 14164 3459557 6919114 13838228