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BaseRepresentation
bin11011010010111…
…11011100011111
3120221212102012200
431221133130133
5432104334021
634415502543
75450205444
oct1551373437
9527772180
10228980511
111082874a1
1264827a53
1338593236
14225a79cb
1515181126
hexda5f71f

228980511 has 12 divisors (see below), whose sum is σ = 336990888. Its totient is φ = 149773104.

The previous prime is 228980501. The next prime is 228980527. The reversal of 228980511 is 115089822.

It is not a de Polignac number, because 228980511 - 26 = 228980447 is a prime.

It is a super-2 number, since 2×2289805112 = 104864148835642242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228980501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239545 + ... + 240498.

It is an arithmetic number, because the mean of its divisors is an integer number (28082574).

Almost surely, 2228980511 is an apocalyptic number.

228980511 is a deficient number, since it is larger than the sum of its proper divisors (108010377).

228980511 is a wasteful number, since it uses less digits than its factorization.

228980511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480102 (or 480099 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 228980511 is about 15132.1020020353. The cubic root of 228980511 is about 611.7859609709.

The spelling of 228980511 in words is "two hundred twenty-eight million, nine hundred eighty thousand, five hundred eleven".