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10512913 = 47223679
BaseRepresentation
bin101000000110…
…101000010001
3201210010000011
4220012220101
510142403123
61013154521
7155233615
oct50065021
921703004
1010512913
115a30564
12362ba41
132241178
141579345
15dc9e0d
hexa06a11

10512913 has 4 divisors (see below), whose sum is σ = 10736640. Its totient is φ = 10289188.

The previous prime is 10512911. The next prime is 10512917. The reversal of 10512913 is 31921501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31921501 = 191680079.

It is a cyclic number.

It is not a de Polignac number, because 10512913 - 21 = 10512911 is a prime.

It is a super-2 number, since 2×105129132 = 221042679491138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10512911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111793 + ... + 111886.

It is an arithmetic number, because the mean of its divisors is an integer number (2684160).

Almost surely, 210512913 is an apocalyptic number.

It is an amenable number.

10512913 is a deficient number, since it is larger than the sum of its proper divisors (223727).

10512913 is an equidigital number, since it uses as much as digits as its factorization.

10512913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223726.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 10512913 is about 3242.3622561336. The cubic root of 10512913 is about 219.0656864602.

The spelling of 10512913 in words is "ten million, five hundred twelve thousand, nine hundred thirteen".

Divisors: 1 47 223679 10512913