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688989600032 = 25191133206579
BaseRepresentation
bin10100000011010101111…
…10101111100100100000
32102212101212111010102112
422001222332233210200
542242022314200112
61244303434134452
7100530542654036
oct12015276574440
92385355433375
10688989600032
11246220738198
12b1645281428
134cc82340986
14254c0cc8556
1512dc7661a22
hexa06afaf920

688989600032 has 24 divisors (see below), whose sum is σ = 1427840290800. Its totient is φ = 326363494464.

The previous prime is 688989600011. The next prime is 688989600137. The reversal of 688989600032 is 230006989886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566602682 + ... + 566603897.

It is an arithmetic number, because the mean of its divisors is an integer number (59493345450).

Almost surely, 2688989600032 is an apocalyptic number.

It is an amenable number.

688989600032 is an abundant number, since it is smaller than the sum of its proper divisors (738850690768).

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

688989600032 is a wasteful number, since it uses less digits than its factorization.

688989600032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133206608 (or 1133206600 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 688989600032 in words is "six hundred eighty-eight billion, nine hundred eighty-nine million, six hundred thousand, thirty-two".

Divisors: 1 2 4 8 16 19 32 38 76 152 304 608 1133206579 2266413158 4532826316 9065652632 18131305264 21530925001 36262610528 43061850002 86123700004 172247400008 344494800016 688989600032