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76828161 = 344357809
BaseRepresentation
bin1001001010001…
…00111000000001
312100120021102110
410211010320001
5124132000121
611342405533
71622012544
oct445047001
9170507373
1076828161
113a405153
12218908a9
1312bbc767
14a2bc85b
156b28d76
hex4944e01

76828161 has 8 divisors (see below), whose sum is σ = 102670560. Its totient is φ = 51102272.

The previous prime is 76828159. The next prime is 76828181. The reversal of 76828161 is 16182867.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76828161 - 21 = 76828159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76828121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27576 + ... + 30233.

It is an arithmetic number, because the mean of its divisors is an integer number (12833820).

Almost surely, 276828161 is an apocalyptic number.

It is an amenable number.

76828161 is a deficient number, since it is larger than the sum of its proper divisors (25842399).

76828161 is a wasteful number, since it uses less digits than its factorization.

76828161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58255.

The product of its digits is 32256, while the sum is 39.

The square root of 76828161 is about 8765.1674827125. The cubic root of 76828161 is about 425.1153753658.

The spelling of 76828161 in words is "seventy-six million, eight hundred twenty-eight thousand, one hundred sixty-one".

Divisors: 1 3 443 1329 57809 173427 25609387 76828161