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228484830 = 23571088023
BaseRepresentation
bin11011001111001…
…10011011011110
3120220221020021010
431213212123132
5431443003310
634401120050
75443042350
oct1547463336
9526836233
10228484830
11107a79042
1264629026
133844b732
14224b90d0
15150d4320
hexd9e66de

228484830 has 32 divisors (see below), whose sum is σ = 626701824. Its totient is φ = 52225056.

The previous prime is 228484801. The next prime is 228484831. The reversal of 228484830 is 38484822.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228484831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543802 + ... + 544221.

It is an arithmetic number, because the mean of its divisors is an integer number (19584432).

Almost surely, 2228484830 is an apocalyptic number.

228484830 is an abundant number, since it is smaller than the sum of its proper divisors (398216994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228484830 is a wasteful number, since it uses less digits than its factorization.

228484830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088040.

The product of its (nonzero) digits is 98304, while the sum is 39.

The square root of 228484830 is about 15115.7146705010. The cubic root of 228484830 is about 611.3441915561.

The spelling of 228484830 in words is "two hundred twenty-eight million, four hundred eighty-four thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 1088023 2176046 3264069 5440115 6528138 7616161 10880230 15232322 16320345 22848483 32640690 38080805 45696966 76161610 114242415 228484830