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130446 = 2327247
BaseRepresentation
bin11111110110001110
320121221100
4133312032
513133241
62443530
71052211
oct376616
9217840
10130446
118a008
12635a6
13474b4
1435778
15289b6
hex1fd8e

130446 has 12 divisors (see below), whose sum is σ = 282672. Its totient is φ = 43476.

The previous prime is 130439. The next prime is 130447. The reversal of 130446 is 644031.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 7247 = 130446 / (1 + 3 + 0 + 4 + 4 + 6).

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 (130447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3606 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (23556).

2130446 is an apocalyptic number.

130446 is an abundant number, since it is smaller than the sum of its proper divisors (152226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130446 is a wasteful number, since it uses less digits than its factorization.

130446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7255 (or 7252 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130446 is about 361.1730886985. The cubic root of 130446 is about 50.7158360018.

Adding to 130446 its reverse (644031), we get a palindrome (774477).

It can be divided in two parts, 130 and 446, that added together give a square (576 = 242).

The spelling of 130446 in words is "one hundred thirty thousand, four hundred forty-six".

Divisors: 1 2 3 6 9 18 7247 14494 21741 43482 65223 130446