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13798393 = 71971199
BaseRepresentation
bin110100101000…
…101111111001
3221222000211121
4310220233321
512013022033
61211425241
7225166360
oct64505771
927860747
1013798393
117874a34
124755221
132b2173b
141b927d7
15132862d
hexd28bf9

13798393 has 4 divisors (see below), whose sum is σ = 15769600. Its totient is φ = 11827188.

The previous prime is 13798381. The next prime is 13798409. The reversal of 13798393 is 39389731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13798393 - 221 = 11701241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13798303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985593 + ... + 985606.

It is an arithmetic number, because the mean of its divisors is an integer number (3942400).

Almost surely, 213798393 is an apocalyptic number.

It is an amenable number.

13798393 is a deficient number, since it is larger than the sum of its proper divisors (1971207).

13798393 is an equidigital number, since it uses as much as digits as its factorization.

13798393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971206.

The product of its digits is 122472, while the sum is 43.

The square root of 13798393 is about 3714.6188229750. The cubic root of 13798393 is about 239.8517197488.

The spelling of 13798393 in words is "thirteen million, seven hundred ninety-eight thousand, three hundred ninety-three".

Divisors: 1 7 1971199 13798393