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229648 = 2431463
BaseRepresentation
bin111000000100010000
3102200000111
4320010100
524322043
64531104
71644346
oct700420
9380014
10229648
111475a1
12b0a94
13806b3
145d996
154809d
hex38110

229648 has 20 divisors (see below), whose sum is σ = 460288. Its totient is φ = 110880.

The previous prime is 229639. The next prime is 229681. The reversal of 229648 is 846922.

It is a super-3 number, since 3×2296483 = 36333669150437376, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265 + ... + 727.

229648 is a Friedman number, since it can be written as 926*248, using all its digits and the basic arithmetic operations.

It is a vampire number, since it can be written as 248926 (with its own digits).

2229648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230144).

229648 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

229648 is a wasteful number, since it uses less digits than its factorization.

229648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 496 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 229648 is about 479.2160264432. The cubic root of 229648 is about 61.2379845930.

The spelling of 229648 in words is "two hundred twenty-nine thousand, six hundred forty-eight".