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130179839 = 235659993
BaseRepresentation
bin1111100001001…
…10001011111111
3100001221211011112
413300212023333
5231311223324
620530112235
73140340026
oct760461377
9301854145
10130179839
1167535049
123771b67b
1320c7c5ba
14134098bd
15b666c0e
hex7c262ff

130179839 has 4 divisors (see below), whose sum is σ = 135839856. Its totient is φ = 124519824.

The previous prime is 130179827. The next prime is 130179853. The reversal of 130179839 is 938971031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130179839 - 24 = 130179823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130179796 and 130179805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130179739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2829974 + ... + 2830019.

It is an arithmetic number, because the mean of its divisors is an integer number (33959964).

Almost surely, 2130179839 is an apocalyptic number.

130179839 is a deficient number, since it is larger than the sum of its proper divisors (5660017).

130179839 is an equidigital number, since it uses as much as digits as its factorization.

130179839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660016.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 130179839 is about 11409.6379872457. The cubic root of 130179839 is about 506.8131911651.

The spelling of 130179839 in words is "one hundred thirty million, one hundred seventy-nine thousand, eight hundred thirty-nine".

Divisors: 1 23 5659993 130179839