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130720470 = 2354357349
BaseRepresentation
bin1111100101010…
…10001011010110
3100002222021202220
413302222023112
5231431023340
620545443210
73145051146
oct762521326
9302867686
10130720470
1167874251
1237940506
132110b6ba
141350a926
15b721ed0
hex7caa2d6

130720470 has 16 divisors (see below), whose sum is σ = 313729200. Its totient is φ = 34858784.

The previous prime is 130720439. The next prime is 130720483. The reversal of 130720470 is 74027031.

It is a self number, because there is not a number n which added to its sum of digits gives 130720470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2178645 + ... + 2178704.

It is an arithmetic number, because the mean of its divisors is an integer number (19608075).

Almost surely, 2130720470 is an apocalyptic number.

130720470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130720470 is an abundant number, since it is smaller than the sum of its proper divisors (183008730).

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

130720470 is a wasteful number, since it uses less digits than its factorization.

130720470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357359.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 130720470 is about 11433.3052963699. The cubic root of 130720470 is about 507.5138129496.

It can be divided in two parts, 130 and 720470, that added together give a triangular number (720600 = T1200).

The spelling of 130720470 in words is "one hundred thirty million, seven hundred twenty thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 4357349 8714698 13072047 21786745 26144094 43573490 65360235 130720470