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228031200000 = 2836551723
BaseRepresentation
bin1101010001011110110…
…1111111101100000000
3210210120212221012000000
43110113231333230000
512214001441400000
6252431152000000
722321553135112
oct3242755775400
9723525835000
10228031200000
118878673869a
123823b230000
1318670842156
14b072c733b2
155de9300000
hex3517b7fb00

228031200000 has 1512 divisors, whose sum is σ = 942447242016. Its totient is φ = 54743040000.

The previous prime is 228031199999. The next prime is 228031200029. The reversal of 228031200000 is 2130822.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 9914399989 + ... + 9914400011.

It is an arithmetic number, because the mean of its divisors is an integer number (623311668).

Almost surely, 2228031200000 is an apocalyptic number.

228031200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228031200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471223621008).

228031200000 is an abundant number, since it is smaller than the sum of its proper divisors (714416042016).

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

228031200000 is an frugal number, since it uses more digits than its factorization.

228031200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 228031200000 its reverse (2130822), we get a palindrome (228033330822).

The spelling of 228031200000 in words is "two hundred twenty-eight billion, thirty-one million, two hundred thousand".