Search a number
-
+
228747379 = 7223146539
BaseRepresentation
bin11011010001001…
…10100001110011
3120221102120102011
431220212201303
5432024404004
634410503351
75445214660
oct1550464163
9527376364
10228747379
11108138323
1264734b57
13385110a3
1422546a67
1515137004
hexda26873

228747379 has 8 divisors (see below), whose sum is σ = 262599680. Its totient is φ = 195188616.

The previous prime is 228747361. The next prime is 228747383. The reversal of 228747379 is 973747822.

228747379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 228747379 - 211 = 228745331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228747349) 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, 71709 + ... + 74830.

It is an arithmetic number, because the mean of its divisors is an integer number (32824960).

Almost surely, 2228747379 is an apocalyptic number.

228747379 is a deficient number, since it is larger than the sum of its proper divisors (33852301).

228747379 is a wasteful number, since it uses less digits than its factorization.

228747379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146769.

The product of its digits is 1185408, while the sum is 49.

The square root of 228747379 is about 15124.3968144187. The cubic root of 228747379 is about 611.5782645230.

The spelling of 228747379 in words is "two hundred twenty-eight million, seven hundred forty-seven thousand, three hundred seventy-nine".

Divisors: 1 7 223 1561 146539 1025773 32678197 228747379