Search a number
-
+
228101767 = 1713417751
BaseRepresentation
bin11011001100010…
…00111010000111
3120220012202210121
431212020322013
5431343224032
634345002411
75436555505
oct1546107207
9526182717
10228101767
11107837263
1264483407
133834627a
1422419675
151505aa97
hexd988e87

228101767 has 4 divisors (see below), whose sum is σ = 241519536. Its totient is φ = 214684000.

The previous prime is 228101723. The next prime is 228101777. The reversal of 228101767 is 767101822.

It is a happy number.

228101767 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 767101822 = 2383550911.

It is a cyclic number.

It is not a de Polignac number, because 228101767 - 223 = 219713159 is a prime.

It is a super-2 number, since 2×2281017672 = 104060832217044578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228101777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6708859 + ... + 6708892.

It is an arithmetic number, because the mean of its divisors is an integer number (60379884).

Almost surely, 2228101767 is an apocalyptic number.

228101767 is a deficient number, since it is larger than the sum of its proper divisors (13417769).

228101767 is a wasteful number, since it uses less digits than its factorization.

228101767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13417768.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 228101767 is about 15103.0383367056. The cubic root of 228101767 is about 611.0023536401.

The spelling of 228101767 in words is "two hundred twenty-eight million, one hundred one thousand, seven hundred sixty-seven".

Divisors: 1 17 13417751 228101767