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10712857 = 21434999
BaseRepresentation
bin101000110111…
…011100011001
3202011021021111
4220313130121
510220302412
61021340321
7160025551
oct50673431
922137244
1010712857
116057801
1237076a1
1322b118c
1415cc161
15e192a7
hexa37719

10712857 has 4 divisors (see below), whose sum is σ = 10720000. Its totient is φ = 10705716.

The previous prime is 10712833. The next prime is 10712899. The reversal of 10712857 is 75821701.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 75821701 = 202937369.

It is a 3-Lehmer number, since φ(10712857) divides (10712857-1)3.

It is a cyclic number.

It is not a de Polignac number, because 10712857 - 27 = 10712729 is a prime.

It is a super-2 number, since 2×107128572 = 229530610204898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10712557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357 + ... + 4642.

It is an arithmetic number, because the mean of its divisors is an integer number (2680000).

It is a Poulet number, since it divides 210712856-1.

Almost surely, 210712857 is an apocalyptic number.

It is an amenable number.

10712857 is a deficient number, since it is larger than the sum of its proper divisors (7143).

10712857 is an equidigital number, since it uses as much as digits as its factorization.

10712857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 10712857 is about 3273.0501065520. The cubic root of 10712857 is about 220.4457697135.

The spelling of 10712857 in words is "ten million, seven hundred twelve thousand, eight hundred fifty-seven".

Divisors: 1 2143 4999 10712857