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130493293 = 718641899
BaseRepresentation
bin1111100011100…
…10101101101101
3100002112202010221
413301302231231
5231401241133
620540531341
73143113630
oct761625555
9302482127
10130493293
11677295a7
1237850b51
132105c188
141348bc17
15b6c9a2d
hex7c72b6d

130493293 has 4 divisors (see below), whose sum is σ = 149135200. Its totient is φ = 111851388.

The previous prime is 130493183. The next prime is 130493303. The reversal of 130493293 is 392394031.

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: 392394031 = 2411628191.

It is a cyclic number.

It is not a de Polignac number, because 130493293 - 225 = 96938861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130493093) 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, 9320943 + ... + 9320956.

It is an arithmetic number, because the mean of its divisors is an integer number (37283800).

Almost surely, 2130493293 is an apocalyptic number.

It is an amenable number.

130493293 is a deficient number, since it is larger than the sum of its proper divisors (18641907).

130493293 is an equidigital number, since it uses as much as digits as its factorization.

130493293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18641906.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 130493293 is about 11423.3660976089. The cubic root of 130493293 is about 507.2196424444.

The spelling of 130493293 in words is "one hundred thirty million, four hundred ninety-three thousand, two hundred ninety-three".

Divisors: 1 7 18641899 130493293