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10530989 = 76412347
BaseRepresentation
bin101000001011…
…000010101101
3201211000210122
4220023002231
510143442424
61013414325
7155340410
oct50130255
921730718
1010530989
115a430a7
12363a3a5
132249471
141581b77
15dd045e
hexa0b0ad

10530989 has 8 divisors (see below), whose sum is σ = 12059328. Its totient is φ = 9008640.

The previous prime is 10530929. The next prime is 10530991. The reversal of 10530989 is 98903501.

10530989 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 a cyclic number.

It is not a de Polignac number, because 10530989 - 216 = 10465453 is a prime.

It is a super-2 number, since 2×105309892 = 221803458636242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10530929) 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, 3314 + ... + 5660.

It is an arithmetic number, because the mean of its divisors is an integer number (1507416).

Almost surely, 210530989 is an apocalyptic number.

It is an amenable number.

10530989 is a deficient number, since it is larger than the sum of its proper divisors (1528339).

10530989 is an equidigital number, since it uses as much as digits as its factorization.

10530989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 10530989 is about 3245.1485328102. The cubic root of 10530989 is about 219.1911690925.

The spelling of 10530989 in words is "ten million, five hundred thirty thousand, nine hundred eighty-nine".

Divisors: 1 7 641 2347 4487 16429 1504427 10530989