Search a number
-
+
12730590447 = 34679906931
BaseRepresentation
bin10111101101100110…
…10110010011101111
31012212012212000000220
423312303112103233
5202033012343242
65503124422423
7630322143021
oct136663262357
935765760026
1012730590447
1154430a5033
122573547a13
13127b624873
1488aa7a011
154e7986bec
hex2f6cd64ef

12730590447 has 8 divisors (see below), whose sum is σ = 16977767040. Its totient is φ = 8485237080.

The previous prime is 12730590427. The next prime is 12730590493. The reversal of 12730590447 is 74409503721.

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

It is not a de Polignac number, because 12730590447 - 210 = 12730589423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12730590399 and 12730590408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730590427) 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, 439429 + ... + 467502.

It is an arithmetic number, because the mean of its divisors is an integer number (2122220880).

Almost surely, 212730590447 is an apocalyptic number.

12730590447 is a deficient number, since it is larger than the sum of its proper divisors (4247176593).

12730590447 is an equidigital number, since it uses as much as digits as its factorization.

12730590447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911613.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 12730590447 in words is "twelve billion, seven hundred thirty million, five hundred ninety thousand, four hundred forty-seven".

Divisors: 1 3 4679 14037 906931 2720793 4243530149 12730590447