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7028047 = 13540619
BaseRepresentation
bin11010110011110101001111
3111020001200001
4122303311033
53244344142
6410345131
7113510635
oct32636517
914201601
107028047
113a70304
12242b1a7
1315c0c10
14d0d355
1593c5b7
hex6b3d4f

7028047 has 4 divisors (see below), whose sum is σ = 7568680. Its totient is φ = 6487416.

The previous prime is 7028033. The next prime is 7028057. The reversal of 7028047 is 7408207.

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

It is a de Polignac number, because none of the positive numbers 2k-7028047 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 (7028017) 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, 270297 + ... + 270322.

It is an arithmetic number, because the mean of its divisors is an integer number (1892170).

Almost surely, 27028047 is an apocalyptic number.

7028047 is a deficient number, since it is larger than the sum of its proper divisors (540633).

7028047 is a wasteful number, since it uses less digits than its factorization.

7028047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540632.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 7028047 is about 2651.0463971798. The cubic root of 7028047 is about 191.5482634387.

The spelling of 7028047 in words is "seven million, twenty-eight thousand, forty-seven".

Divisors: 1 13 540619 7028047