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8026945 = 51605389
BaseRepresentation
bin11110100111101101000001
3120002210220021
4132213231001
54023330240
6444013441
7125141113
oct36475501
916083807
108026945
114592843
122831281
131880794
1410cd3b3
15a8854a
hex7a7b41

8026945 has 4 divisors (see below), whose sum is σ = 9632340. Its totient is φ = 6421552.

The previous prime is 8026937. The next prime is 8026957. The reversal of 8026945 is 5496208.

It is a happy number.

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 6370576 + 1656369 = 2524^2 + 1287^2 .

It is a cyclic number.

It is not a de Polignac number, because 8026945 - 23 = 8026937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8026945.

It is an unprimeable number.

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, 802690 + ... + 802699.

It is an arithmetic number, because the mean of its divisors is an integer number (2408085).

Almost surely, 28026945 is an apocalyptic number.

It is an amenable number.

8026945 is a deficient number, since it is larger than the sum of its proper divisors (1605395).

8026945 is a wasteful number, since it uses less digits than its factorization.

8026945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605394.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 8026945 is about 2833.1863687375. The cubic root of 8026945 is about 200.2242900425.

The spelling of 8026945 in words is "eight million, twenty-six thousand, nine hundred forty-five".

Divisors: 1 5 1605389 8026945