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13078901 = 111188991
BaseRepresentation
bin110001111001…
…000101110101
3220121110212202
4301321011311
511322011101
61144154245
7216111623
oct61710565
926543782
1013078901
117423410
124468985
13292c0c4
141a46513
15123536b
hexc79175

13078901 has 4 divisors (see below), whose sum is σ = 14267904. Its totient is φ = 11889900.

The previous prime is 13078889. The next prime is 13078903. The reversal of 13078901 is 10987031.

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 de Polignac number, because none of the positive numbers 2k-13078901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13078903) 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, 594485 + ... + 594506.

It is an arithmetic number, because the mean of its divisors is an integer number (3566976).

Almost surely, 213078901 is an apocalyptic number.

13078901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13078901 is a deficient number, since it is larger than the sum of its proper divisors (1189003).

13078901 is a wasteful number, since it uses less digits than its factorization.

13078901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189002.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 13078901 is about 3616.4763237162. The cubic root of 13078901 is about 235.6082087395.

The spelling of 13078901 in words is "thirteen million, seventy-eight thousand, nine hundred one".

Divisors: 1 11 1188991 13078901