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20480666088 = 23317311619281
BaseRepresentation
bin10011000100101111…
…100010100111101000
31221212022222122011110
4103010233202213220
5313421022303323
613224135430320
71323346534521
oct230457424750
957768878143
1020480666088
11875a890623
123b76b253a0
131c1515083c
14dc4087848
157ed065793
hex4c4be29e8

20480666088 has 64 divisors (see below), whose sum is σ = 55962385920. Its totient is φ = 6218035200.

The previous prime is 20480666083. The next prime is 20480666111. The reversal of 20480666088 is 88066608402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20480666083) 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 15 ways as a sum of consecutive naturals, for example, 796993 + ... + 822288.

It is an arithmetic number, because the mean of its divisors is an integer number (874412280).

Almost surely, 220480666088 is an apocalyptic number.

It is an amenable number.

20480666088 is an abundant number, since it is smaller than the sum of its proper divisors (35481719832).

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

20480666088 is a wasteful number, since it uses less digits than its factorization.

20480666088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619338 (or 1619334 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 20480666088 in words is "twenty billion, four hundred eighty million, six hundred sixty-six thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 12 17 24 31 34 51 62 68 93 102 124 136 186 204 248 372 408 527 744 1054 1581 2108 3162 4216 6324 12648 1619281 3238562 4857843 6477124 9715686 12954248 19431372 27527777 38862744 50197711 55055554 82583331 100395422 110111108 150593133 165166662 200790844 220222216 301186266 330333324 401581688 602372532 660666648 853361087 1204745064 1706722174 2560083261 3413444348 5120166522 6826888696 10240333044 20480666088