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2870069 = 24111909
BaseRepresentation
bin1010111100101100110101
312101210222212
422330230311
51213320234
6141303205
733252356
oct12745465
95353885
102870069
111690364
12b64b05
13796487
14549d2d
153ba5ce
hex2bcb35

2870069 has 4 divisors (see below), whose sum is σ = 2882220. Its totient is φ = 2857920.

The previous prime is 2870051. The next prime is 2870081. The reversal of 2870069 is 9600782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1575025 + 1295044 = 1255^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 2870069 - 28 = 2869813 is a prime.

It is a super-2 number, since 2×28700692 = 16474592129522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2870039) 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, 5714 + ... + 6195.

It is an arithmetic number, because the mean of its divisors is an integer number (720555).

22870069 is an apocalyptic number.

It is an amenable number.

2870069 is a deficient number, since it is larger than the sum of its proper divisors (12151).

2870069 is a wasteful number, since it uses less digits than its factorization.

2870069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12150.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 2870069 is about 1694.1277991934. The cubic root of 2870069 is about 142.1120090918.

The spelling of 2870069 in words is "two million, eight hundred seventy thousand, sixty-nine".

Divisors: 1 241 11909 2870069