Search a number
-
+
8238280 = 235205957
BaseRepresentation
bin11111011011010011001000
3120111112210111
4133123103020
54102111110
6452324104
7130011211
oct37332310
916445714
108238280
1147175a6
122913634
131925a2b
141146408
15acae8a
hex7db4c8

8238280 has 16 divisors (see below), whose sum is σ = 18536220. Its totient is φ = 3295296.

The previous prime is 8238247. The next prime is 8238283. The reversal of 8238280 is 828328.

It can be written as a sum of positive squares in 2 ways, for example, as 7986276 + 252004 = 2826^2 + 502^2 .

It is not an unprimeable number, because it can be changed into a prime (8238283) 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 3 ways as a sum of consecutive naturals, for example, 102939 + ... + 103018.

Almost surely, 28238280 is an apocalyptic number.

It is an amenable number.

8238280 is an abundant number, since it is smaller than the sum of its proper divisors (10297940).

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

8238280 is a wasteful number, since it uses less digits than its factorization.

8238280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205968 (or 205964 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 8238280 is about 2870.2404080495. The cubic root of 8238280 is about 201.9662721847.

The spelling of 8238280 in words is "eight million, two hundred thirty-eight thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 205957 411914 823828 1029785 1647656 2059570 4119140 8238280