Search a number
-
+
13206457 = 1110111887
BaseRepresentation
bin110010011000…
…001110111001
3220211221212001
4302120032321
511340101312
61151021001
7220152535
oct62301671
926757761
1013206457
117500230
12450a761
132975194
141a7abc5
15125d057
hexc983b9

13206457 has 8 divisors (see below), whose sum is σ = 14550912. Its totient is φ = 11886000.

The previous prime is 13206449. The next prime is 13206491. The reversal of 13206457 is 75460231.

13206457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13206457 - 23 = 13206449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13206407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4833 + ... + 7054.

It is an arithmetic number, because the mean of its divisors is an integer number (1818864).

Almost surely, 213206457 is an apocalyptic number.

It is an amenable number.

13206457 is a deficient number, since it is larger than the sum of its proper divisors (1344455).

13206457 is a wasteful number, since it uses less digits than its factorization.

13206457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11999.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 13206457 is about 3634.0689316522. The cubic root of 13206457 is about 236.3716792449.

Adding to 13206457 its reverse (75460231), we get a palindrome (88666688).

It can be divided in two parts, 1320 and 6457, that added together give a palindrome (7777).

The spelling of 13206457 in words is "thirteen million, two hundred six thousand, four hundred fifty-seven".

Divisors: 1 11 101 1111 11887 130757 1200587 13206457