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20530006288 = 2411211552833
BaseRepresentation
bin10011000111101011…
…110000100100010000
31221222202211101012021
4103013223300210100
5314021140200123
613233101141224
71324516113511
oct230753604420
957882741167
1020530006288
118785720650
123b8b55a814
131c2243781c
14dca84ca08
1580255ec5d
hex4c7af0910

20530006288 has 40 divisors (see below), whose sum is σ = 43598700576. Its totient is φ = 9287577600.

The previous prime is 20530006283. The next prime is 20530006297. The reversal of 20530006288 is 88260003502.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20530006283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239281 + ... + 313552.

Almost surely, 220530006288 is an apocalyptic number.

It is an amenable number.

20530006288 is an abundant number, since it is smaller than the sum of its proper divisors (23068694288).

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

20530006288 is a wasteful number, since it uses less digits than its factorization.

20530006288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553063 (or 553057 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 20530006288 in words is "twenty billion, five hundred thirty million, six thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 11 16 22 44 88 176 211 422 844 1688 2321 3376 4642 9284 18568 37136 552833 1105666 2211332 4422664 6081163 8845328 12162326 24324652 48649304 97298608 116647763 233295526 466591052 933182104 1283125393 1866364208 2566250786 5132501572 10265003144 20530006288