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6830249 = 43158843
BaseRepresentation
bin11010000011100010101001
3110212000100012
4122003202221
53222031444
6402221305
7112025156
oct32034251
913760305
106830249
113945738
122354835
131551b8a
14c9b22d
158edb9e
hex6838a9

6830249 has 4 divisors (see below), whose sum is σ = 6989136. Its totient is φ = 6671364.

The previous prime is 6830227. The next prime is 6830251. The reversal of 6830249 is 9420386.

6830249 = T542 + T543 + ... + T584.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-6830249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6835249) 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, 79379 + ... + 79464.

It is an arithmetic number, because the mean of its divisors is an integer number (1747284).

Almost surely, 26830249 is an apocalyptic number.

It is an amenable number.

6830249 is a deficient number, since it is larger than the sum of its proper divisors (158887).

6830249 is a wasteful number, since it uses less digits than its factorization.

6830249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158886.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 6830249 is about 2613.4745072413. The cubic root of 6830249 is about 189.7341526699.

The spelling of 6830249 in words is "six million, eight hundred thirty thousand, two hundred forty-nine".

Divisors: 1 43 158843 6830249