Search a number
-
+
13712069 = 71958867
BaseRepresentation
bin110100010011…
…101011000101
3221210122102102
4310103223011
512002241234
61205521445
7224356610
oct64235305
927718372
1013712069
117816098
124713285
132ac1367
141b6d177
15130cc7e
hexd13ac5

13712069 has 4 divisors (see below), whose sum is σ = 15670944. Its totient is φ = 11753196.

The previous prime is 13712059. The next prime is 13712077. The reversal of 13712069 is 96021731.

13712069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 13712069 - 220 = 12663493 is a prime.

It is a super-2 number, since 2×137120692 = 376041672521522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13712009) 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, 979427 + ... + 979440.

It is an arithmetic number, because the mean of its divisors is an integer number (3917736).

Almost surely, 213712069 is an apocalyptic number.

It is an amenable number.

13712069 is a deficient number, since it is larger than the sum of its proper divisors (1958875).

13712069 is an equidigital number, since it uses as much as digits as its factorization.

13712069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958874.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 13712069 is about 3702.9810963601. The cubic root of 13712069 is about 239.3504950066.

The spelling of 13712069 in words is "thirteen million, seven hundred twelve thousand, sixty-nine".

Divisors: 1 7 1958867 13712069