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130020320 = 255812627
BaseRepresentation
bin1111011111111…
…11001111100000
3100001122201100102
413233333033200
5231241122240
620522441532
73136103663
oct757771740
9301581312
10130020320
1167436211
12376632a8
1320c24b01
14133a76da
15b634815
hex7bff3e0

130020320 has 24 divisors (see below), whose sum is σ = 307173384. Its totient is φ = 52008064.

The previous prime is 130020313. The next prime is 130020337. The reversal of 130020320 is 23020031.

It is a super-2 number, since 2×1300203202 = 33810567225804800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406154 + ... + 406473.

It is an arithmetic number, because the mean of its divisors is an integer number (12798891).

Almost surely, 2130020320 is an apocalyptic number.

130020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130020320 is an abundant number, since it is smaller than the sum of its proper divisors (177153064).

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

130020320 is an equidigital number, since it uses as much as digits as its factorization.

130020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812642 (or 812634 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 130020320 is about 11402.6453071206. The cubic root of 130020320 is about 506.6060946364.

Adding to 130020320 its reverse (23020031), we get a palindrome (153040351).

The spelling of 130020320 in words is "one hundred thirty million, twenty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 812627 1625254 3250508 4063135 6501016 8126270 13002032 16252540 26004064 32505080 65010160 130020320