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130730280 = 23354872237
BaseRepresentation
bin1111100101011…
…00100100101000
3100002222210020020
413302230210220
5231431332110
620550000440
73145121562
oct762544450
9302883206
10130730280
116788065a
1237946120
1321112cc5
1413510332
15b724d70
hex7cac928

130730280 has 64 divisors (see below), whose sum is σ = 393171840. Its totient is φ = 34774272.

The previous prime is 130730261. The next prime is 130730291. The reversal of 130730280 is 82037031.

It is a super-2 number, since 2×1307302802 = 34180812217756800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 130730280.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57322 + ... + 59558.

It is an arithmetic number, because the mean of its divisors is an integer number (6143310).

Almost surely, 2130730280 is an apocalyptic number.

130730280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130730280 is an abundant number, since it is smaller than the sum of its proper divisors (262441560).

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

130730280 is a wasteful number, since it uses less digits than its factorization.

130730280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 130730280 is about 11433.7342981198. The cubic root of 130730280 is about 507.5265081966.

The spelling of 130730280 in words is "one hundred thirty million, seven hundred thirty thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 487 974 1461 1948 2237 2435 2922 3896 4474 4870 5844 6711 7305 8948 9740 11185 11688 13422 14610 17896 19480 22370 26844 29220 33555 44740 53688 58440 67110 89480 134220 268440 1089419 2178838 3268257 4357676 5447095 6536514 8715352 10894190 13073028 16341285 21788380 26146056 32682570 43576760 65365140 130730280