Search a number
-
+
130282581 = 31113303689
BaseRepresentation
bin1111100001111…
…11010001010101
3100002011001002210
413300333101111
5231323020311
620532224033
73141245412
oct760772125
9302131083
10130282581
11675a5260
123776b019
1320cb72b0
1413435109
15b6873a6
hex7c3f455

130282581 has 16 divisors (see below), whose sum is σ = 204079680. Its totient is φ = 72885120.

The previous prime is 130282571. The next prime is 130282591. The reversal of 130282581 is 185282031.

It is an interprime number because it is at equal distance from previous prime (130282571) and next prime (130282591).

It is not a de Polignac number, because 130282581 - 26 = 130282517 is a prime.

It is a super-2 number, since 2×1302825812 = 33947101824043122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130282531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151416 + ... + 152273.

It is an arithmetic number, because the mean of its divisors is an integer number (12754980).

Almost surely, 2130282581 is an apocalyptic number.

130282581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130282581 is a deficient number, since it is larger than the sum of its proper divisors (73797099).

130282581 is a wasteful number, since it uses less digits than its factorization.

130282581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303716.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 130282581 is about 11414.1395207874. The cubic root of 130282581 is about 506.9464870441.

The spelling of 130282581 in words is "one hundred thirty million, two hundred eighty-two thousand, five hundred eighty-one".

Divisors: 1 3 11 13 33 39 143 429 303689 911067 3340579 3947957 10021737 11843871 43427527 130282581