Search a number
-
+
130701720 = 23352694049
BaseRepresentation
bin1111100101001…
…01100110011000
3100002221100001110
413302211212120
5231424423340
620545220320
73144642402
oct762454630
9302840043
10130701720
1167861156
12379316a0
1321102cc6
1413503b72
15b71b680
hex7ca5998

130701720 has 64 divisors (see below), whose sum is σ = 393660000. Its totient is φ = 34715648.

The previous prime is 130701679. The next prime is 130701731. The reversal of 130701720 is 27107031.

It is a super-2 number, since 2×1307017202 = 34165879221916800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30256 + ... + 34304.

Almost surely, 2130701720 is an apocalyptic number.

130701720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 130701720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196830000).

130701720 is an abundant number, since it is smaller than the sum of its proper divisors (262958280).

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

130701720 is a wasteful number, since it uses less digits than its factorization.

130701720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332 (or 4328 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 130701720 is about 11432.4852941082. The cubic root of 130701720 is about 507.4895465665.

Adding to 130701720 its reverse (27107031), we get a palindrome (157808751).

The spelling of 130701720 in words is "one hundred thirty million, seven hundred one thousand, seven hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 269 538 807 1076 1345 1614 2152 2690 3228 4035 4049 5380 6456 8070 8098 10760 12147 16140 16196 20245 24294 32280 32392 40490 48588 60735 80980 97176 121470 161960 242940 485880 1089181 2178362 3267543 4356724 5445905 6535086 8713448 10891810 13070172 16337715 21783620 26140344 32675430 43567240 65350860 130701720