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20022181360 = 2451217205651
BaseRepresentation
bin10010101001011010…
…100011110111110000
31220200101021012100121
4102221122203313300
5312001134300420
613110440500024
71306111506406
oct225132436760
956611235317
1020022181360
118544aaa225
123a6947a614
131b71172bbc
14d7d21b476
157c2b9d2aa
hex4a96a3df0

20022181360 has 40 divisors (see below), whose sum is σ = 46590049296. Its totient is φ = 8002252800.

The previous prime is 20022181343. The next prime is 20022181391. The reversal of 20022181360 is 6318122002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5466 + ... + 200185.

Almost surely, 220022181360 is an apocalyptic number.

20022181360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022181360 is an abundant number, since it is smaller than the sum of its proper divisors (26567867936).

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

20022181360 is a wasteful number, since it uses less digits than its factorization.

20022181360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206881 (or 206875 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 20022181360 in words is "twenty billion, twenty-two million, one hundred eighty-one thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1217 2434 4868 6085 9736 12170 19472 24340 48680 97360 205651 411302 822604 1028255 1645208 2056510 3290416 4113020 8226040 16452080 250277267 500554534 1001109068 1251386335 2002218136 2502772670 4004436272 5005545340 10011090680 20022181360