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130784673 = 343594891
BaseRepresentation
bin1111100101110…
…01110110100001
3100010002112211210
413302321312201
5231440102143
620551100333
73145436265
oct762716641
9303075753
10130784673
1167908508
12379716a9
13211319a6
14135260a5
15b736033
hex7cb9da1

130784673 has 4 divisors (see below), whose sum is σ = 174379568. Its totient is φ = 87189780.

The previous prime is 130784669. The next prime is 130784681. The reversal of 130784673 is 376487031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 376487031 = 3125495677.

It is not a de Polignac number, because 130784673 - 22 = 130784669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130784653) 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, 21797443 + ... + 21797448.

It is an arithmetic number, because the mean of its divisors is an integer number (43594892).

Almost surely, 2130784673 is an apocalyptic number.

It is an amenable number.

130784673 is a deficient number, since it is larger than the sum of its proper divisors (43594895).

130784673 is an equidigital number, since it uses as much as digits as its factorization.

130784673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43594894.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 130784673 is about 11436.1126699591. The cubic root of 130784673 is about 507.5968873559.

The spelling of 130784673 in words is "one hundred thirty million, seven hundred eighty-four thousand, six hundred seventy-three".

Divisors: 1 3 43594891 130784673