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7828230 = 235260941
BaseRepresentation
bin11101110111001100000110
3112201201022110
4131313030012
54001000410
6435441450
7123352554
oct35671406
915651273
107828230
114467513
122756286
1318111b7
14107abd4
15a49720
hex777306

7828230 has 16 divisors (see below), whose sum is σ = 18787824. Its totient is φ = 2087520.

The previous prime is 7828217. The next prime is 7828237. The reversal of 7828230 is 328287.

It is a super-2 number, since 2×78282302 = 122562369865800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 260941 = 7828230 / (7 + 8 + 2 + 8 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130441 + ... + 130500.

It is an arithmetic number, because the mean of its divisors is an integer number (1174239).

Almost surely, 27828230 is an apocalyptic number.

7828230 is an abundant number, since it is smaller than the sum of its proper divisors (10959594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7828230 is a wasteful number, since it uses less digits than its factorization.

7828230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260951.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 7828230 is about 2797.8974248532. The cubic root of 7828230 is about 198.5582145833.

The spelling of 7828230 in words is "seven million, eight hundred twenty-eight thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 260941 521882 782823 1304705 1565646 2609410 3914115 7828230