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10688886520 = 2351320555551
BaseRepresentation
bin10011111010001101…
…10111011011111000
31000120221000200202221
421331012313123320
5133342323332040
64524351533424
7525611015314
oct117506673370
930527020687
1010688886520
114595663714
1220a382a274
131014638230
14735846b44
154285d774a
hex27d1b76f8

10688886520 has 32 divisors (see below), whose sum is σ = 25899995520. Its totient is φ = 3946665600.

The previous prime is 10688886503. The next prime is 10688886553. The reversal of 10688886520 is 2568888601.

It is a super-2 number, since 2×106888865202 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 10277256 + ... + 10278295.

It is an arithmetic number, because the mean of its divisors is an integer number (809374860).

Almost surely, 210688886520 is an apocalyptic number.

10688886520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10688886520 is an abundant number, since it is smaller than the sum of its proper divisors (15211109000).

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

10688886520 is a wasteful number, since it uses less digits than its factorization.

10688886520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20555575 (or 20555571 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 52.

The spelling of 10688886520 in words is "ten billion, six hundred eighty-eight million, eight hundred eighty-six thousand, five hundred twenty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 20555551 41111102 82222204 102777755 164444408 205555510 267222163 411111020 534444326 822222040 1068888652 1336110815 2137777304 2672221630 5344443260 10688886520