Search a number
-
+
228806443 = 3131323581
BaseRepresentation
bin11011010001101…
…00111100101011
3120221112120102201
431220310330223
5432033301233
634412041031
75445552115
oct1550647453
9527476381
10228806443
11108178738
1264763177
1338531c38
14225603b5
151514977d
hexda34f2b

228806443 has 8 divisors (see below), whose sum is σ = 236951936. Its totient is φ = 220708800.

The previous prime is 228806441. The next prime is 228806471. The reversal of 228806443 is 344608822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228806443 - 21 = 228806441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228806441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088 + ... + 21493.

It is an arithmetic number, because the mean of its divisors is an integer number (29618992).

Almost surely, 2228806443 is an apocalyptic number.

228806443 is a deficient number, since it is larger than the sum of its proper divisors (8145493).

228806443 is a wasteful number, since it uses less digits than its factorization.

228806443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23925.

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 228806443 is about 15126.3492951869. The cubic root of 228806443 is about 611.6308977674.

The spelling of 228806443 in words is "two hundred twenty-eight million, eight hundred six thousand, four hundred forty-three".

Divisors: 1 31 313 9703 23581 731011 7380853 228806443