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530387860 = 225139190787
BaseRepresentation
bin11111100111010…
…001001110010100
31100222000111100211
4133213101032110
52041234402420
6124344015204
716100136202
oct3747211624
91328014324
10530387860
11252432282
12129761504
1385b64792
1450626072
153186be5a
hex1f9d1394

530387860 has 24 divisors (see below), whose sum is σ = 1121833440. Its totient is φ = 210627744.

The previous prime is 530387857. The next prime is 530387861. The reversal of 530387860 is 68783035.

It is a super-2 number, since 2×5303878602 = 562622564070759200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530387861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92614 + ... + 98173.

It is an arithmetic number, because the mean of its divisors is an integer number (46743060).

Almost surely, 2530387860 is an apocalyptic number.

It is an amenable number.

530387860 is an abundant number, since it is smaller than the sum of its proper divisors (591445580).

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

530387860 is a wasteful number, since it uses less digits than its factorization.

530387860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190935 (or 190933 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 530387860 is about 23030.1511067557. The cubic root of 530387860 is about 809.4645956282.

The spelling of 530387860 in words is "five hundred thirty million, three hundred eighty-seven thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 190787 381574 763148 953935 1907870 3815740 26519393 53038786 106077572 132596965 265193930 530387860