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130378205 = 526075641
BaseRepresentation
bin1111100010101…
…10100111011101
3100002022220021102
413301112213131
5231334100310
620534242445
73142124246
oct761264735
9302286242
10130378205
1167660091
12377b6425
132101b989
141345bccd
15b6a58a5
hex7c569dd

130378205 has 4 divisors (see below), whose sum is σ = 156453852. Its totient is φ = 104302560.

The previous prime is 130378201. The next prime is 130378207. The reversal of 130378205 is 502873031.

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 85729081 + 44649124 = 9259^2 + 6682^2 .

It is not a de Polignac number, because 130378205 - 22 = 130378201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130378201) 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, 13037816 + ... + 13037825.

It is an arithmetic number, because the mean of its divisors is an integer number (39113463).

Almost surely, 2130378205 is an apocalyptic number.

It is an amenable number.

130378205 is a deficient number, since it is larger than the sum of its proper divisors (26075647).

130378205 is an equidigital number, since it uses as much as digits as its factorization.

130378205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075646.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 130378205 is about 11418.3275920776. The cubic root of 130378205 is about 507.0704851903.

The spelling of 130378205 in words is "one hundred thirty million, three hundred seventy-eight thousand, two hundred five".

Divisors: 1 5 26075641 130378205