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2857141 = 7258309
BaseRepresentation
bin1010111001100010110101
312101011021001
422321202311
51212412031
6141123301
733166600
oct12714265
95334231
102857141
111681681
12b59531
13790621
14545337
153b6861
hex2b98b5

2857141 has 6 divisors (see below), whose sum is σ = 3323670. Its totient is φ = 2448936.

The previous prime is 2857123. The next prime is 2857159. The reversal of 2857141 is 1417582.

It is an interprime number because it is at equal distance from previous prime (2857123) and next prime (2857159).

It can be written as a sum of positive squares in only one way, i.e., 2414916 + 442225 = 1554^2 + 665^2 .

It is not a de Polignac number, because 2857141 - 27 = 2857013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29106 + ... + 29203.

It is an arithmetic number, because the mean of its divisors is an integer number (553945).

22857141 is an apocalyptic number.

It is an amenable number.

2857141 is a deficient number, since it is larger than the sum of its proper divisors (466529).

2857141 is an equidigital number, since it uses as much as digits as its factorization.

2857141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58323 (or 58316 counting only the distinct ones).

The product of its digits is 2240, while the sum is 28.

The square root of 2857141 is about 1690.3079601067. The cubic root of 2857141 is about 141.8983104524.

The spelling of 2857141 in words is "two million, eight hundred fifty-seven thousand, one hundred forty-one".

Divisors: 1 7 49 58309 408163 2857141