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7830133 = 14715323
BaseRepresentation
bin11101110111101001110101
3112201210220221
4131313221311
54001031013
6435454341
7123361243
oct35675165
915653827
107830133
114468993
1227573b1
13181201c
14107b793
15a4a08d
hex777a75

7830133 has 4 divisors (see below), whose sum is σ = 7836928. Its totient is φ = 7823340.

The previous prime is 7830127. The next prime is 7830157. The reversal of 7830133 is 3310387.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7830133 - 25 = 7830101 is a prime.

It is a super-2 number, since 2×78301332 = 122621965595378, which contains 22 as substring.

It is a Duffinian number.

7830133 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7830098 and 7830107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7830103) 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, 1191 + ... + 4132.

It is an arithmetic number, because the mean of its divisors is an integer number (1959232).

Almost surely, 27830133 is an apocalyptic number.

It is an amenable number.

7830133 is a deficient number, since it is larger than the sum of its proper divisors (6795).

7830133 is a wasteful number, since it uses less digits than its factorization.

7830133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6794.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 7830133 is about 2798.2374809869. The cubic root of 7830133 is about 198.5743027525.

The spelling of 7830133 in words is "seven million, eight hundred thirty thousand, one hundred thirty-three".

Divisors: 1 1471 5323 7830133