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76308081 = 3311395903
BaseRepresentation
bin1001000110001…
…01111001110001
312022120212000020
410203011321301
5124013324311
611323314053
71614415353
oct443057161
9168525006
1076308081
113a08a433
122167b929
1312a69b15
14a1c50d3
156a74c06
hex48c5e71

76308081 has 16 divisors (see below), whose sum is σ = 105799680. Its totient is φ = 48868560.

The previous prime is 76308073. The next prime is 76308083. The reversal of 76308081 is 18080367.

It is not a de Polignac number, because 76308081 - 23 = 76308073 is a prime.

It is a super-3 number, since 3×763080813 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (76308083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9976 + ... + 15878.

It is an arithmetic number, because the mean of its divisors is an integer number (6612480).

Almost surely, 276308081 is an apocalyptic number.

It is an amenable number.

76308081 is a deficient number, since it is larger than the sum of its proper divisors (29491599).

76308081 is a wasteful number, since it uses less digits than its factorization.

76308081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 76308081 is about 8735.4496736001. The cubic root of 76308081 is about 424.1539450040.

The spelling of 76308081 in words is "seventy-six million, three hundred eight thousand, eighty-one".

Divisors: 1 3 31 93 139 417 4309 5903 12927 17709 182993 548979 820517 2461551 25436027 76308081