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26930107688 = 2311819137361
BaseRepresentation
bin11001000101001010…
…001101010100101000
32120111210202012210212
4121011022031110220
5420123101421223
620212125400252
71642232065331
oct310512152450
976453665725
1026930107688
111046a386550
125276a09088
13270237c083
14143684b288
15a7937b278
hex64528d528

26930107688 has 32 divisors (see below), whose sum is σ = 55092510720. Its totient is φ = 12239136000.

The previous prime is 26930107679. The next prime is 26930107717. The reversal of 26930107688 is 88670103962.

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, 702128 + ... + 739488.

It is an arithmetic number, because the mean of its divisors is an integer number (1721640960).

Almost surely, 226930107688 is an apocalyptic number.

It is an amenable number.

26930107688 is an abundant number, since it is smaller than the sum of its proper divisors (28162403032).

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

26930107688 is a wasteful number, since it uses less digits than its factorization.

26930107688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45569 (or 45565 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 26930107688 in words is "twenty-six billion, nine hundred thirty million, one hundred seven thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 11 22 44 88 8191 16382 32764 37361 65528 74722 90101 149444 180202 298888 360404 410971 720808 821942 1643884 3287768 306023951 612047902 1224095804 2448191608 3366263461 6732526922 13465053844 26930107688