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10857143 = 11987013
BaseRepresentation
bin101001011010…
…101010110111
3202102121012102
4221122222313
510234412033
61024412315
7161166323
oct51325267
922377172
1010857143
116146150
12377709b
132331a5b
141628983
15e46de8
hexa5aab7

10857143 has 4 divisors (see below), whose sum is σ = 11844168. Its totient is φ = 9870120.

The previous prime is 10857139. The next prime is 10857167. The reversal of 10857143 is 34175801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34175801 = 113106891.

It is a cyclic number.

It is not a de Polignac number, because 10857143 - 22 = 10857139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10857193) 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, 493496 + ... + 493517.

It is an arithmetic number, because the mean of its divisors is an integer number (2961042).

Almost surely, 210857143 is an apocalyptic number.

10857143 is a deficient number, since it is larger than the sum of its proper divisors (987025).

10857143 is an equidigital number, since it uses as much as digits as its factorization.

10857143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987024.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 10857143 is about 3295.0179058694. The cubic root of 10857143 is about 221.4310499500.

It can be divided in two parts, 10857 and 143, that multiplied together give a palindrome (1552551).

The spelling of 10857143 in words is "ten million, eight hundred fifty-seven thousand, one hundred forty-three".

Divisors: 1 11 987013 10857143