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130456 = 2323709
BaseRepresentation
bin11111110110011000
320121221201
4133312120
513133311
62443544
71052224
oct376630
9217851
10130456
118a017
12635b4
13474c1
1435784
15289c1
hex1fd98

130456 has 16 divisors (see below), whose sum is σ = 255600. Its totient is φ = 62304.

The previous prime is 130447. The next prime is 130457. The reversal of 130456 is 654031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130457) by changing a digit.

130456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (15975).

2130456 is an apocalyptic number.

It is an amenable number.

130456 is a deficient number, since it is larger than the sum of its proper divisors (125144).

130456 is a wasteful number, since it uses less digits than its factorization.

130456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 130456 is about 361.1869322110. The cubic root of 130456 is about 50.7171319286.

Adding to 130456 its product of nonzero digits (360), we get a triangular number (130816 = T511).

Adding to 130456 its reverse (654031), we get a palindrome (784487).

The spelling of 130456 in words is "one hundred thirty thousand, four hundred fifty-six".

Divisors: 1 2 4 8 23 46 92 184 709 1418 2836 5672 16307 32614 65228 130456