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230020333220 = 22511501016661
BaseRepresentation
bin1101011000111001000…
…1111011111010100100
3210222201111211121210202
43112032101323322210
512232040201130340
6253400410010032
722422055400246
oct3261621737244
9728644747722
10230020333220
1189607532947
12386b5416918
13188c9983262
14b1c1100096
155eb3c67c15
hex358e47bea4

230020333220 has 12 divisors (see below), whose sum is σ = 483042699804. Its totient is φ = 92008133280.

The previous prime is 230020333171. The next prime is 230020333223. The reversal of 230020333220 is 22333020032.

It can be written as a sum of positive squares in 2 ways, for example, as 68501545984 + 161518787236 = 261728^2 + 401894^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 11501016661 = 230020333220 / (2 + 3 + 0 + 0 + 2 + 0 + 3 + 3 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 230020333192 and 230020333201.

It is not an unprimeable number, because it can be changed into a prime (230020333223) 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, 5750508311 + ... + 5750508350.

It is an arithmetic number, because the mean of its divisors is an integer number (40253558317).

Almost surely, 2230020333220 is an apocalyptic number.

230020333220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230020333220 is an abundant number, since it is smaller than the sum of its proper divisors (253022366584).

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

230020333220 is a wasteful number, since it uses less digits than its factorization.

230020333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501016670 (or 11501016668 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 20.

Adding to 230020333220 its reverse (22333020032), we get a palindrome (252353353252).

The spelling of 230020333220 in words is "two hundred thirty billion, twenty million, three hundred thirty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 11501016661 23002033322 46004066644 57505083305 115010166610 230020333220