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13797841 = 87715733
BaseRepresentation
bin110100101000…
…100111010001
3221222000002011
4310220213101
512013012331
61211422521
7225164641
oct64504721
927860064
1013797841
117874582
124754a41
132b21405
141b92521
1513283b1
hexd289d1

13797841 has 4 divisors (see below), whose sum is σ = 13814452. Its totient is φ = 13781232.

The previous prime is 13797809. The next prime is 13797851. The reversal of 13797841 is 14879731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6350400 + 7447441 = 2520^2 + 2729^2 .

It is a cyclic number.

It is not a de Polignac number, because 13797841 - 25 = 13797809 is a prime.

It is a super-2 number, since 2×137978412 = 380760832522562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13797794 and 13797803.

It is not an unprimeable number, because it can be changed into a prime (13797851) 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, 6990 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (3453613).

Almost surely, 213797841 is an apocalyptic number.

It is an amenable number.

13797841 is a deficient number, since it is larger than the sum of its proper divisors (16611).

13797841 is an equidigital number, since it uses as much as digits as its factorization.

13797841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16610.

The product of its digits is 42336, while the sum is 40.

The square root of 13797841 is about 3714.5445212031. The cubic root of 13797841 is about 239.8485213108.

The spelling of 13797841 in words is "thirteen million, seven hundred ninety-seven thousand, eight hundred forty-one".

Divisors: 1 877 15733 13797841