Search a number
-
+
130436 = 2232609
BaseRepresentation
bin11111110110000100
320121220222
4133312010
513133221
62443512
71052165
oct376604
9217828
10130436
1189aa9
1263598
13474a7
143576c
15289ab
hex1fd84

130436 has 6 divisors (see below), whose sum is σ = 228270. Its totient is φ = 65216.

The previous prime is 130423. The next prime is 130439. The reversal of 130436 is 634031.

It can be written as a sum of positive squares in only one way, i.e., 118336 + 12100 = 344^2 + 110^2 .

It is a plaindrome in base 15.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16301 + ... + 16308.

It is an arithmetic number, because the mean of its divisors is an integer number (38045).

2130436 is an apocalyptic number.

It is an amenable number.

130436 is a deficient number, since it is larger than the sum of its proper divisors (97834).

130436 is a wasteful number, since it uses less digits than its factorization.

130436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32613 (or 32611 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130436 is about 361.1592446553. The cubic root of 130436 is about 50.7145400087.

Adding to 130436 its reverse (634031), we get a palindrome (764467).

The spelling of 130436 in words is "one hundred thirty thousand, four hundred thirty-six".

Divisors: 1 2 4 32609 65218 130436