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10530861 = 311319117
BaseRepresentation
bin101000001011…
…000000101101
3201211000121220
4220023000231
510143441421
61013413553
7155340135
oct50130055
921730556
1010530861
115a42aa0
12363a2b9
1322493a3
141581ac5
15dd03c6
hexa0b02d

10530861 has 8 divisors (see below), whose sum is σ = 15317664. Its totient is φ = 6382320.

The previous prime is 10530841. The next prime is 10530887. The reversal of 10530861 is 16803501.

10530861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10530861 - 26 = 10530797 is a prime.

It is a super-2 number, since 2×105308612 = 221798066802642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10530811) 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, 159526 + ... + 159591.

It is an arithmetic number, because the mean of its divisors is an integer number (1914708).

Almost surely, 210530861 is an apocalyptic number.

10530861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10530861 is a deficient number, since it is larger than the sum of its proper divisors (4786803).

10530861 is a wasteful number, since it uses less digits than its factorization.

10530861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319131.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 10530861 is about 3245.1288110027. The cubic root of 10530861 is about 219.1902810283.

The spelling of 10530861 in words is "ten million, five hundred thirty thousand, eight hundred sixty-one".

Divisors: 1 3 11 33 319117 957351 3510287 10530861