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228230398 = 21110374109
BaseRepresentation
bin11011001101010…
…00010011111110
3120220110022020201
431212220103332
5431411333043
634351434114
75440632514
oct1546502376
9526408221
10228230398
11107914970
126452593a
133838c996
14224504b4
1515083c4d
hexd9a84fe

228230398 has 8 divisors (see below), whose sum is σ = 373467960. Its totient is φ = 103741080.

The previous prime is 228230371. The next prime is 228230399. The reversal of 228230398 is 893032822.

It is a happy number.

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

It is a super-2 number, since 2×2282303982 = 104178229142476808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228230399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5187033 + ... + 5187076.

It is an arithmetic number, because the mean of its divisors is an integer number (46683495).

Almost surely, 2228230398 is an apocalyptic number.

228230398 is a deficient number, since it is larger than the sum of its proper divisors (145237562).

228230398 is a wasteful number, since it uses less digits than its factorization.

228230398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374122.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 228230398 is about 15107.2961842945. The cubic root of 228230398 is about 611.1171840743.

The spelling of 228230398 in words is "two hundred twenty-eight million, two hundred thirty thousand, three hundred ninety-eight".

Divisors: 1 2 11 22 10374109 20748218 114115199 228230398