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130437 = 334831
BaseRepresentation
bin11111110110000101
320121221000
4133312011
513133222
62443513
71052166
oct376605
9217830
10130437
1189aaa
1263599
13474a8
143576d
15289ac
hex1fd85

130437 has 8 divisors (see below), whose sum is σ = 193280. Its totient is φ = 86940.

The previous prime is 130423. The next prime is 130439. The reversal of 130437 is 734031.

It is not a de Polignac number, because 130437 - 211 = 128389 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130439) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2389 + ... + 2442.

It is an arithmetic number, because the mean of its divisors is an integer number (24160).

2130437 is an apocalyptic number.

It is an amenable number.

130437 is a deficient number, since it is larger than the sum of its proper divisors (62843).

130437 is an equidigital number, since it uses as much as digits as its factorization.

130437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4840 (or 4834 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 130437 is about 361.1606290835. The cubic root of 130437 is about 50.7146696110.

Adding to 130437 its reverse (734031), we get a palindrome (864468).

The spelling of 130437 in words is "one hundred thirty thousand, four hundred thirty-seven".

Divisors: 1 3 9 27 4831 14493 43479 130437