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228110789 = 1912005831
BaseRepresentation
bin11011001100010…
…11000111000101
3120220020020011202
431212023013011
5431344021124
634345112245
75436624014
oct1546130705
9526206152
10228110789
11107843015
1264488685
133834a3ca
142241ca7b
151505d5ae
hexd98b1c5

228110789 has 4 divisors (see below), whose sum is σ = 240116640. Its totient is φ = 216104940.

The previous prime is 228110759. The next prime is 228110801. The reversal of 228110789 is 987011822.

228110789 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-228110789 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 (228110759) 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, 6002897 + ... + 6002934.

It is an arithmetic number, because the mean of its divisors is an integer number (60029160).

Almost surely, 2228110789 is an apocalyptic number.

It is an amenable number.

228110789 is a deficient number, since it is larger than the sum of its proper divisors (12005851).

228110789 is a wasteful number, since it uses less digits than its factorization.

228110789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12005850.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 228110789 is about 15103.3370153751. The cubic root of 228110789 is about 611.0104090951.

The spelling of 228110789 in words is "two hundred twenty-eight million, one hundred ten thousand, seven hundred eighty-nine".

Divisors: 1 19 12005831 228110789