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22681220620 = 2251134061031
BaseRepresentation
bin10101000111111001…
…111111011000001100
32011112200201101111011
4111013321333120030
5332422343024440
614230345135004
71432030123432
oct250771773014
964480641434
1022681220620
119689a59833
12448ba8a464
1321a6017706
14115242ad52
158cb3419ea
hex547e7f60c

22681220620 has 12 divisors (see below), whose sum is σ = 47630563344. Its totient is φ = 9072488240.

The previous prime is 22681220603. The next prime is 22681220687. The reversal of 22681220620 is 2602218622.

It is a super-2 number, since 2×226812206202 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567030496 + ... + 567030535.

It is an arithmetic number, because the mean of its divisors is an integer number (3969213612).

Almost surely, 222681220620 is an apocalyptic number.

22681220620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22681220620 is an abundant number, since it is smaller than the sum of its proper divisors (24949342724).

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

22681220620 is a wasteful number, since it uses less digits than its factorization.

22681220620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134061040 (or 1134061038 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The spelling of 22681220620 in words is "twenty-two billion, six hundred eighty-one million, two hundred twenty thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 1134061031 2268122062 4536244124 5670305155 11340610310 22681220620