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227380805 = 599745613
BaseRepresentation
bin11011000110110…
…00111001000101
3120211212010211022
431203120321011
5431202141210
634321320525
75430463541
oct1543307105
9524763738
10227380805
11107394623
1264196145
1338153072
14222aca21
1514e67155
hexd8d8e45

227380805 has 8 divisors (see below), whose sum is σ = 273136632. Its totient is φ = 181718208.

The previous prime is 227380801. The next prime is 227380823. The reversal of 227380805 is 508083722.

It is a happy number.

227380805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10201636 + 217179169 = 3194^2 + 14737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 227380805 - 22 = 227380801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227380801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17822 + ... + 27791.

It is an arithmetic number, because the mean of its divisors is an integer number (34142079).

Almost surely, 2227380805 is an apocalyptic number.

It is an amenable number.

227380805 is a deficient number, since it is larger than the sum of its proper divisors (45755827).

227380805 is an equidigital number, since it uses as much as digits as its factorization.

227380805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46615.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 227380805 is about 15079.1513355361. The cubic root of 227380805 is about 610.3579418527.

The spelling of 227380805 in words is "two hundred twenty-seven million, three hundred eighty thousand, eight hundred five".

Divisors: 1 5 997 4985 45613 228065 45476161 227380805