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530705881 = 17223139991
BaseRepresentation
bin11111101000011…
…110110111011001
31100222121122121101
4133220132313121
52041330042011
6124354511401
716102632316
oct3750366731
91328548541
10530705881
1125262a202
12129895561
1385c46464
14506a9d0d
15318d12c1
hex1fa1edd9

530705881 has 8 divisors (see below), whose sum is σ = 564447744. Its totient is φ = 497244480.

The previous prime is 530705869. The next prime is 530705921. The reversal of 530705881 is 188507035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 530705881 - 213 = 530697689 is a prime.

It is a super-2 number, since 2×5307058812 = 563297464255972322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 530705881.

It is not an unprimeable number, because it can be changed into a prime (530705831) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 66205 + ... + 73786.

It is an arithmetic number, because the mean of its divisors is an integer number (70555968).

Almost surely, 2530705881 is an apocalyptic number.

It is an amenable number.

530705881 is a deficient number, since it is larger than the sum of its proper divisors (33741863).

530705881 is a wasteful number, since it uses less digits than its factorization.

530705881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140231.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 530705881 is about 23037.0545209235. The cubic root of 530705881 is about 809.6263485173.

The spelling of 530705881 in words is "five hundred thirty million, seven hundred five thousand, eight hundred eighty-one".

Divisors: 1 17 223 3791 139991 2379847 31217993 530705881