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3028231 = 25711783
BaseRepresentation
bin1011100011010100000111
312200211221201
423203110013
51233400411
6144523331
734511443
oct13432407
95624851
103028231
111789178
121020547
1382046b
1458b823
153ec3c1
hex2e3507

3028231 has 4 divisors (see below), whose sum is σ = 3040272. Its totient is φ = 3016192.

The previous prime is 3028229. The next prime is 3028241. The reversal of 3028231 is 1328203.

It is a happy number.

3028231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3028231 - 21 = 3028229 is a prime.

It is a super-2 number, since 2×30282312 = 18340365978722, which contains 22 as substring.

It is a Duffinian number.

3028231 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3028199 and 3028208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3028241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (760068).

Almost surely, 23028231 is an apocalyptic number.

3028231 is a deficient number, since it is larger than the sum of its proper divisors (12041).

3028231 is a wasteful number, since it uses less digits than its factorization.

3028231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12040.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3028231 is about 1740.1813123925. The cubic root of 3028231 is about 144.6759469602.

The spelling of 3028231 in words is "three million, twenty-eight thousand, two hundred thirty-one".

Divisors: 1 257 11783 3028231