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226280 = 2355657
BaseRepresentation
bin110111001111101000
3102111101202
4313033220
524220110
64503332
71631465
oct671750
9374352
10226280
1114500a
12aab48
137bcc2
145c66c
15470a5
hex373e8

226280 has 16 divisors (see below), whose sum is σ = 509220. Its totient is φ = 90496.

The previous prime is 226267. The next prime is 226283. The reversal of 226280 is 82622.

It can be written as a sum of positive squares in 2 ways, for example, as 206116 + 20164 = 454^2 + 142^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (226283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2789 + ... + 2868.

2226280 is an apocalyptic number.

226280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

226280 is an abundant number, since it is smaller than the sum of its proper divisors (282940).

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

226280 is a wasteful number, since it uses less digits than its factorization.

226280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5668 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 226280 is about 475.6889740156. The cubic root of 226280 is about 60.9371385032.

The spelling of 226280 in words is "two hundred twenty-six thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 5657 11314 22628 28285 45256 56570 113140 226280