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228144167 = 886125747
BaseRepresentation
bin11011001100100…
…11010000100111
3120220021220221222
431212103100213
5431401103132
634345530555
75440123226
oct1546232047
9526256858
10228144167
111078660a9
12644a3a5b
133835c664
142242acbd
1515068412
hexd993427

228144167 has 4 divisors (see below), whose sum is σ = 228178776. Its totient is φ = 228109560.

The previous prime is 228144151. The next prime is 228144173. The reversal of 228144167 is 761441822.

228144167 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: 761441822 = 2380720911.

It is a cyclic number.

It is not a de Polignac number, because 228144167 - 24 = 228144151 is a prime.

It is a super-2 number, since 2×2281441672 = 104099521872247778, 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 (228144667) 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, 4013 + ... + 21734.

It is an arithmetic number, because the mean of its divisors is an integer number (57044694).

Almost surely, 2228144167 is an apocalyptic number.

228144167 is a deficient number, since it is larger than the sum of its proper divisors (34609).

228144167 is an equidigital number, since it uses as much as digits as its factorization.

228144167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34608.

The product of its digits is 21504, while the sum is 35.

The square root of 228144167 is about 15104.4419625486. The cubic root of 228144167 is about 611.0402093965.

Adding to 228144167 its reverse (761441822), we get a palindrome (989585989).

The spelling of 228144167 in words is "two hundred twenty-eight million, one hundred forty-four thousand, one hundred sixty-seven".

Divisors: 1 8861 25747 228144167