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76056281 = 721552169
BaseRepresentation
bin1001000100010…
…00011011011001
312022010001121022
410202020123121
5123432300111
611314052225
71612316300
oct442103331
9168101538
1076056281
1139a28234
122157a075
13129ac322
14a15b437
156a252db
hex48886d9

76056281 has 6 divisors (see below), whose sum is σ = 88473690. Its totient is φ = 65191056.

The previous prime is 76056269. The next prime is 76056287. The reversal of 76056281 is 18265067.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 30426256 = 6755^2 + 5516^2 .

It is not a de Polignac number, because 76056281 - 26 = 76056217 is a prime.

It is a super-2 number, since 2×760562812 = 11569115759101922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76056287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 776036 + ... + 776133.

It is an arithmetic number, because the mean of its divisors is an integer number (14745615).

Almost surely, 276056281 is an apocalyptic number.

It is an amenable number.

76056281 is a deficient number, since it is larger than the sum of its proper divisors (12417409).

76056281 is a wasteful number, since it uses less digits than its factorization.

76056281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552183 (or 1552176 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 76056281 is about 8721.0252264284. The cubic root of 76056281 is about 423.6868924448.

The spelling of 76056281 in words is "seventy-six million, fifty-six thousand, two hundred eighty-one".

Divisors: 1 7 49 1552169 10865183 76056281