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8028047 = 34923003
BaseRepresentation
bin11110100111111110001111
3120002212102002
4132213332033
54023344142
6444022515
7125144246
oct36477617
916085362
108028047
114593655
122831a3b
131881131
1410cd95d
15a88a32
hex7a7f8f

8028047 has 4 divisors (see below), whose sum is σ = 8051400. Its totient is φ = 8004696.

The previous prime is 8028043. The next prime is 8028061. The reversal of 8028047 is 7408208.

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

It is a cyclic number.

It is not a de Polignac number, because 8028047 - 22 = 8028043 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 (8028043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11153 + ... + 11850.

It is an arithmetic number, because the mean of its divisors is an integer number (2012850).

Almost surely, 28028047 is an apocalyptic number.

8028047 is a deficient number, since it is larger than the sum of its proper divisors (23353).

8028047 is a wasteful number, since it uses less digits than its factorization.

8028047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23352.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 8028047 is about 2833.3808427389. The cubic root of 8028047 is about 200.2334523939.

It can be divided in two parts, 802804 and 7, that multiplied together give a triangular number (5619628 = T3352).

The spelling of 8028047 in words is "eight million, twenty-eight thousand, forty-seven".

Divisors: 1 349 23003 8028047