Search a number
-
+
130661460 = 22325725897
BaseRepresentation
bin1111100100110…
…11110001010100
3100002212021211100
413302123301110
5231422131320
620544310100
73144414126
oct762336124
9302767740
10130661460
1167833986
1237912330
13210ba897
14134d3216
15b70e790
hex7c9bc54

130661460 has 36 divisors (see below), whose sum is σ = 396340308. Its totient is φ = 34843008.

The previous prime is 130661441. The next prime is 130661471. The reversal of 130661460 is 64166031.

It can be written as a sum of positive squares in 2 ways, for example, as 39992976 + 90668484 = 6324^2 + 9522^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 362769 + ... + 363128.

It is an arithmetic number, because the mean of its divisors is an integer number (11009453).

Almost surely, 2130661460 is an apocalyptic number.

130661460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130661460 is an abundant number, since it is smaller than the sum of its proper divisors (265678848).

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

130661460 is a wasteful number, since it uses less digits than its factorization.

130661460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725912 (or 725907 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 130661460 is about 11430.7243864945. The cubic root of 130661460 is about 507.4374339462.

The spelling of 130661460 in words is "one hundred thirty million, six hundred sixty-one thousand, four hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 725897 1451794 2177691 2903588 3629485 4355382 6533073 7258970 8710764 10888455 13066146 14517940 21776910 26132292 32665365 43553820 65330730 130661460