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3000311220 = 223550005187
BaseRepresentation
bin1011001011010101…
…0001110110110100
321202002121121020210
42302311101312310
522121034424340
61213415025420
7134231140014
oct26265216664
97662547223
103000311220
1112aa663255
126b896b270
1338a7930aa
14206687c44
15128606180
hexb2d51db4

3000311220 has 24 divisors (see below), whose sum is σ = 8400871584. Its totient is φ = 800082976.

The previous prime is 3000311213. The next prime is 3000311221. The reversal of 3000311220 is 221130003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 3000311196 and 3000311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000311221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25002534 + ... + 25002653.

It is an arithmetic number, because the mean of its divisors is an integer number (350036316).

Almost surely, 23000311220 is an apocalyptic number.

3000311220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3000311220 is an abundant number, since it is smaller than the sum of its proper divisors (5400560364).

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

3000311220 is a wasteful number, since it uses less digits than its factorization.

3000311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50005199 (or 50005197 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 3000311220 is about 54775.0967137439. The cubic root of 3000311220 is about 1442.2994415730.

Adding to 3000311220 its reverse (221130003), we get a palindrome (3221441223).

The spelling of 3000311220 in words is "three billion, three hundred eleven thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 50005187 100010374 150015561 200020748 250025935 300031122 500051870 600062244 750077805 1000103740 1500155610 3000311220