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13077929 = 109119981
BaseRepresentation
bin110001111000…
…110110101001
3220121102112202
4301320312221
511321443204
61144145545
7216106034
oct61706651
926542482
1013077929
117422707
1244682b5
13292b827
141a4601b
151234e1e
hexc78da9

13077929 has 4 divisors (see below), whose sum is σ = 13198020. Its totient is φ = 12957840.

The previous prime is 13077923. The next prime is 13077941. The reversal of 13077929 is 92977031.

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 3610000 + 9467929 = 1900^2 + 3077^2 .

It is a cyclic number.

It is not a de Polignac number, because 13077929 - 216 = 13012393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13077892 and 13077901.

It is not an unprimeable number, because it can be changed into a prime (13077923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59882 + ... + 60099.

It is an arithmetic number, because the mean of its divisors is an integer number (3299505).

Almost surely, 213077929 is an apocalyptic number.

It is an amenable number.

13077929 is a deficient number, since it is larger than the sum of its proper divisors (120091).

13077929 is a wasteful number, since it uses less digits than its factorization.

13077929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120090.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 13077929 is about 3616.3419362665. The cubic root of 13077929 is about 235.6023719378.

The spelling of 13077929 in words is "thirteen million, seventy-seven thousand, nine hundred twenty-nine".

Divisors: 1 109 119981 13077929