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130540285 = 526108057
BaseRepresentation
bin1111100011111…
…10001011111101
3100002122010121101
413301332023331
5231404242120
620541533101
73143400631
oct761761375
9302563541
10130540285
1167760937
1237874191
1321077695
14134a0dc1
15b6d890a
hex7c7e2fd

130540285 has 4 divisors (see below), whose sum is σ = 156648348. Its totient is φ = 104432224.

The previous prime is 130540271. The next prime is 130540327. The reversal of 130540285 is 582045031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83795716 + 46744569 = 9154^2 + 6837^2 .

It is a cyclic number.

It is not a de Polignac number, because 130540285 - 211 = 130538237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13054024 + ... + 13054033.

It is an arithmetic number, because the mean of its divisors is an integer number (39162087).

Almost surely, 2130540285 is an apocalyptic number.

It is an amenable number.

130540285 is a deficient number, since it is larger than the sum of its proper divisors (26108063).

130540285 is an equidigital number, since it uses as much as digits as its factorization.

130540285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26108062.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 130540285 is about 11425.4227492903. The cubic root of 130540285 is about 507.2805201707.

The spelling of 130540285 in words is "one hundred thirty million, five hundred forty thousand, two hundred eighty-five".

Divisors: 1 5 26108057 130540285