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82068688 = 2413571691
BaseRepresentation
bin1001110010001…
…00010011010000
312201102112002001
410321010103100
5132002144223
612051003344
72014400212
oct471042320
9181375061
1082068688
1142364469
1223599554
1314005b70
14ac845b2
1573119ad
hex4e444d0

82068688 has 40 divisors (see below), whose sum is σ = 171787616. Its totient is φ = 37756800.

The previous prime is 82068671. The next prime is 82068691. The reversal of 82068688 is 88686028.

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, 118423 + ... + 119113.

Almost surely, 282068688 is an apocalyptic number.

It is an amenable number.

82068688 is an abundant number, since it is smaller than the sum of its proper divisors (89718928).

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

82068688 is a wasteful number, since it uses less digits than its factorization.

82068688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 82068688 is about 9059.1770045628. The cubic root of 82068688 is about 434.5694211216.

The spelling of 82068688 in words is "eighty-two million, sixty-eight thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 13 16 26 52 104 208 571 691 1142 1382 2284 2764 4568 5528 7423 8983 9136 11056 14846 17966 29692 35932 59384 71864 118768 143728 394561 789122 1578244 3156488 5129293 6312976 10258586 20517172 41034344 82068688