Search a number
-
+
130793 = 1310061
BaseRepresentation
bin11111111011101001
320122102012
4133323221
513141133
62445305
71053215
oct377351
9218365
10130793
118a2a3
1263835
13476c0
1435945
1528b48
hex1fee9

130793 has 4 divisors (see below), whose sum is σ = 140868. Its totient is φ = 120720.

The previous prime is 130787. The next prime is 130807. The reversal of 130793 is 397031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 397031 = 1013931.

It can be written as a sum of positive squares in 2 ways, for example, as 44944 + 85849 = 212^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 130793 - 26 = 130729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130783) 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, 5018 + ... + 5043.

It is an arithmetic number, because the mean of its divisors is an integer number (35217).

2130793 is an apocalyptic number.

130793 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

130793 is a deficient number, since it is larger than the sum of its proper divisors (10075).

130793 is a wasteful number, since it uses less digits than its factorization.

130793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 130793 is about 361.6531487489. The cubic root of 130793 is about 50.7607659947.

Adding to 130793 its sum of digits (23), we get a triangular number (130816 = T511).

The spelling of 130793 in words is "one hundred thirty thousand, seven hundred ninety-three".

Divisors: 1 13 10061 130793