Search a number
-
+
228076105 = 545615221
BaseRepresentation
bin11011001100000…
…10101001001001
3120220011110121011
431212002221021
5431341413410
634344243521
75436420625
oct1546025111
9526143534
10228076105
11107819a54
12644705a1
133833769a
1422410185
151505318a
hexd982a49

228076105 has 4 divisors (see below), whose sum is σ = 273691332. Its totient is φ = 182460880.

The previous prime is 228076087. The next prime is 228076127. The reversal of 228076105 is 501670822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109244304 + 118831801 = 10452^2 + 10901^2 .

It is not a de Polignac number, because 228076105 - 27 = 228075977 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22807606 + ... + 22807615.

It is an arithmetic number, because the mean of its divisors is an integer number (68422833).

Almost surely, 2228076105 is an apocalyptic number.

It is an amenable number.

228076105 is a deficient number, since it is larger than the sum of its proper divisors (45615227).

228076105 is an equidigital number, since it uses as much as digits as its factorization.

228076105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45615226.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 228076105 is about 15102.1887486549. The cubic root of 228076105 is about 610.9794397004.

The spelling of 228076105 in words is "two hundred twenty-eight million, seventy-six thousand, one hundred five".

Divisors: 1 5 45615221 228076105