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530418820 = 225191395839
BaseRepresentation
bin11111100111011…
…000110010000100
31100222002001211111
4133213120302010
52041241400240
6124344414404
716100325361
oct3747306204
91328061744
10530418820
11252453568
12129777404
1385b758b9
1450633468
15318761ea
hex1f9d8c84

530418820 has 24 divisors (see below), whose sum is σ = 1172505600. Its totient is φ = 201000672.

The previous prime is 530418817. The next prime is 530418841. The reversal of 530418820 is 28814035.

It is a super-2 number, since 2×5304188202 = 562688249220384800, which contains 22 as substring.

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, 697540 + ... + 698299.

It is an arithmetic number, because the mean of its divisors is an integer number (48854400).

Almost surely, 2530418820 is an apocalyptic number.

It is an amenable number.

530418820 is an abundant number, since it is smaller than the sum of its proper divisors (642086780).

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

530418820 is a wasteful number, since it uses less digits than its factorization.

530418820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395867 (or 1395865 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 530418820 is about 23030.8232592758. The cubic root of 530418820 is about 809.4803454458.

The spelling of 530418820 in words is "five hundred thirty million, four hundred eighteen thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 1395839 2791678 5583356 6979195 13958390 26520941 27916780 53041882 106083764 132604705 265209410 530418820