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228084551 = 618574363
BaseRepresentation
bin11011001100001…
…00101101000111
3120220011220011222
431212010231013
5431342201201
634344350555
75436454352
oct1546045507
9526156158
10228084551
11107825332
126447545b
133833b496
1422413299
151505591b
hexd984b47

228084551 has 8 divisors (see below), whose sum is σ = 232147344. Its totient is φ = 224032320.

The previous prime is 228084541. The next prime is 228084553. The reversal of 228084551 is 155480822.

It is a happy number.

228084551 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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-228084551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228084553) 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, 50096 + ... + 54458.

It is an arithmetic number, because the mean of its divisors is an integer number (29018418).

Almost surely, 2228084551 is an apocalyptic number.

228084551 is a deficient number, since it is larger than the sum of its proper divisors (4062793).

228084551 is an equidigital number, since it uses as much as digits as its factorization.

228084551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 228084551 is about 15102.4683744082. The cubic root of 228084551 is about 610.9869814354.

The spelling of 228084551 in words is "two hundred twenty-eight million, eighty-four thousand, five hundred fifty-one".

Divisors: 1 61 857 4363 52277 266143 3739091 228084551