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688073076 = 223315434129
BaseRepresentation
bin101001000000110…
…010100101110100
31202221201201211000
4221000302211310
52402121314301
6152135443300
723023344645
oct5100624564
91687651730
10688073076
11323443539
12172526530
13ac724742
14675516cc
1540618786
hex29032974

688073076 has 48 divisors (see below), whose sum is σ = 1785481600. Its totient is φ = 229153536.

The previous prime is 688073069. The next prime is 688073081. The reversal of 688073076 is 670370886.

It is a super-2 number, since 2×6880730762 = 946889115832203552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164580 + ... + 168708.

Almost surely, 2688073076 is an apocalyptic number.

It is an amenable number.

688073076 is an abundant number, since it is smaller than the sum of its proper divisors (1097408524).

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

688073076 is a wasteful number, since it uses less digits than its factorization.

688073076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685 (or 5677 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 688073076 is about 26231.1470584113. The cubic root of 688073076 is about 882.8322469852.

The spelling of 688073076 in words is "six hundred eighty-eight million, seventy-three thousand, seventy-six".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 1543 3086 4129 4629 6172 8258 9258 12387 13887 16516 18516 24774 27774 37161 41661 49548 55548 74322 83322 111483 148644 166644 222966 445932 6371047 12742094 19113141 25484188 38226282 57339423 76452564 114678846 172018269 229357692 344036538 688073076