Search a number
-
+
228085877 = 472791307
BaseRepresentation
bin11011001100001…
…01000001110101
3120220011222000002
431212011001311
5431342222002
634344401045
75436461255
oct1546050165
9526158002
10228085877
11107826328
1264476185
133833bc76
1422413965
1515056002
hexd985075

228085877 has 12 divisors (see below), whose sum is σ = 236172480. Its totient is φ = 220238616.

The previous prime is 228085859. The next prime is 228085901. The reversal of 228085877 is 778580822.

It is not a de Polignac number, because 228085877 - 26 = 228085813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228084877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173858 + ... + 175164.

It is an arithmetic number, because the mean of its divisors is an integer number (19681040).

Almost surely, 2228085877 is an apocalyptic number.

It is an amenable number.

228085877 is a deficient number, since it is larger than the sum of its proper divisors (8086603).

228085877 is an equidigital number, since it uses as much as digits as its factorization.

228085877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 228085877 is about 15102.5122744529. The cubic root of 228085877 is about 610.9881654512.

The spelling of 228085877 in words is "two hundred twenty-eight million, eighty-five thousand, eight hundred seventy-seven".

Divisors: 1 47 79 1307 2209 3713 61429 103253 174511 2887163 4852891 228085877