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228338653 = 3143317011
BaseRepresentation
bin11011001110000…
…10101111011101
3120220122210202011
431213002233131
5431423314103
634354031221
75441563234
oct1547025735
9526583664
10228338653
11107989234
1264578511
13383ca03a
142247bb1b
15150a5d6d
hexd9c2bdd

228338653 has 8 divisors (see below), whose sum is σ = 236262656. Its totient is φ = 220449600.

The previous prime is 228338651. The next prime is 228338701. The reversal of 228338653 is 356833822.

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 228338653 - 21 = 228338651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228338651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4918 + ... + 21928.

It is an arithmetic number, because the mean of its divisors is an integer number (29532832).

Almost surely, 2228338653 is an apocalyptic number.

It is an amenable number.

228338653 is a deficient number, since it is larger than the sum of its proper divisors (7924003).

228338653 is a wasteful number, since it uses less digits than its factorization.

228338653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17475.

The product of its digits is 207360, while the sum is 40.

The square root of 228338653 is about 15110.8786309731. The cubic root of 228338653 is about 611.2137911787.

The spelling of 228338653 in words is "two hundred twenty-eight million, three hundred thirty-eight thousand, six hundred fifty-three".

Divisors: 1 31 433 13423 17011 527341 7365763 228338653