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76521080 = 23517432617
BaseRepresentation
bin1001000111110…
…01111001111000
312022222200012002
410203321321320
5124042133310
611332040132
71616263346
oct443717170
9168880162
1076521080
113a215469
1221763048
1312b12a5c
14a23c996
156ab7da5
hex48f9e78

76521080 has 64 divisors (see below), whose sum is σ = 186611040. Its totient is φ = 28127232.

The previous prime is 76521079. The next prime is 76521083. The reversal of 76521080 is 8012567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76521083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27932 + ... + 30548.

Almost surely, 276521080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76521080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93305520).

76521080 is an abundant number, since it is smaller than the sum of its proper divisors (110089960).

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

76521080 is a wasteful number, since it uses less digits than its factorization.

76521080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688 (or 2684 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 76521080 is about 8747.6328226555. The cubic root of 76521080 is about 424.5482258174.

The spelling of 76521080 in words is "seventy-six million, five hundred twenty-one thousand, eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 43 68 85 86 136 170 172 215 340 344 430 680 731 860 1462 1720 2617 2924 3655 5234 5848 7310 10468 13085 14620 20936 26170 29240 44489 52340 88978 104680 112531 177956 222445 225062 355912 444890 450124 562655 889780 900248 1125310 1779560 1913027 2250620 3826054 4501240 7652108 9565135 15304216 19130270 38260540 76521080