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2838061 = 4169221
BaseRepresentation
bin1010110100111000101101
312100012002101
422310320231
51211304221
6140455101
733060142
oct12647055
95305071
102838061
111669306
12b4a491
13784a35
1453c3c9
153b0d91
hex2b4e2d

2838061 has 4 divisors (see below), whose sum is σ = 2907324. Its totient is φ = 2768800.

The previous prime is 2838047. The next prime is 2838067. The reversal of 2838061 is 1608382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1608382 = 2804191.

It can be written as a sum of positive squares in 2 ways, for example, as 570025 + 2268036 = 755^2 + 1506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2838061 - 217 = 2706989 is a prime.

It is a Duffinian number.

2838061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2838067) 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, 34570 + ... + 34651.

It is an arithmetic number, because the mean of its divisors is an integer number (726831).

22838061 is an apocalyptic number.

It is an amenable number.

2838061 is a deficient number, since it is larger than the sum of its proper divisors (69263).

2838061 is an equidigital number, since it uses as much as digits as its factorization.

2838061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69262.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2838061 is about 1684.6545639982. The cubic root of 2838061 is about 141.5817388699.

It can be divided in two parts, 28380 and 61, that added together give a triangular number (28441 = T238).

The spelling of 2838061 in words is "two million, eight hundred thirty-eight thousand, sixty-one".

Divisors: 1 41 69221 2838061