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10530815 = 54794397
BaseRepresentation
bin101000001010…
…111111111111
3201211000120012
4220022333333
510143441230
61013413435
7155340041
oct50127777
921730505
1010530815
115a42a59
12363a27b
132249369
141581a91
15dd0395
hexa0afff

10530815 has 8 divisors (see below), whose sum is σ = 12666240. Its totient is φ = 8405152.

The previous prime is 10530811. The next prime is 10530841. The reversal of 10530815 is 51803501.

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 10530815 - 22 = 10530811 is a prime.

It is a super-2 number, since 2×105308152 = 221796129128450, which contains 22 as substring.

It is a zygodrome in base 4.

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, 197 + ... + 4593.

It is an arithmetic number, because the mean of its divisors is an integer number (1583280).

Almost surely, 210530815 is an apocalyptic number.

10530815 is a deficient number, since it is larger than the sum of its proper divisors (2135425).

10530815 is an equidigital number, since it uses as much as digits as its factorization.

10530815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4881.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 10530815 is about 3245.1217234489. The cubic root of 10530815 is about 219.1899618785.

The spelling of 10530815 in words is "ten million, five hundred thirty thousand, eight hundred fifteen".

Divisors: 1 5 479 2395 4397 21985 2106163 10530815