Search a number
-
+
8278230 = 235275941
BaseRepresentation
bin11111100101000011010110
3120120120121010
4133211003112
54104400410
6453233050
7130235532
oct37450326
916516533
108278230
114744614
122932786
13193ac7c
141156bc2
15ad7c20
hex7e50d6

8278230 has 16 divisors (see below), whose sum is σ = 19867824. Its totient is φ = 2207520.

The previous prime is 8278211. The next prime is 8278247. The reversal of 8278230 is 328728.

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: 275941 = 8278230 / (8 + 2 + 7 + 8 + 2 + 3 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 137941 + ... + 138000.

It is an arithmetic number, because the mean of its divisors is an integer number (1241739).

Almost surely, 28278230 is an apocalyptic number.

8278230 is an abundant number, since it is smaller than the sum of its proper divisors (11589594).

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

8278230 is a wasteful number, since it uses less digits than its factorization.

8278230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275951.

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

The square root of 8278230 is about 2877.1913387886. The cubic root of 8278230 is about 202.2922117936.

The spelling of 8278230 in words is "eight million, two hundred seventy-eight thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 275941 551882 827823 1379705 1655646 2759410 4139115 8278230