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80316769 = 136178213
BaseRepresentation
bin1001100100110…
…00100101100001
312121010111220011
410302120211201
5131030114034
611545244521
71663452451
oct462304541
9177114804
1080316769
11413781a5
1222a93741
1313841620
14a949d61
1570b7864
hex4c98961

80316769 has 4 divisors (see below), whose sum is σ = 86494996. Its totient is φ = 74138544.

The previous prime is 80316767. The next prime is 80316773. The reversal of 80316769 is 96761308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18490000 + 61826769 = 4300^2 + 7863^2 .

It is a cyclic number.

It is not a de Polignac number, because 80316769 - 21 = 80316767 is a prime.

It is a super-2 number, since 2×803167692 = 12901566765198722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80316767) 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 3 ways as a sum of consecutive naturals, for example, 3089094 + ... + 3089119.

It is an arithmetic number, because the mean of its divisors is an integer number (21623749).

Almost surely, 280316769 is an apocalyptic number.

It is an amenable number.

80316769 is a deficient number, since it is larger than the sum of its proper divisors (6178227).

80316769 is a wasteful number, since it uses less digits than its factorization.

80316769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178226.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 80316769 is about 8961.9623409162. The cubic root of 80316769 is about 431.4549041247.

The spelling of 80316769 in words is "eighty million, three hundred sixteen thousand, seven hundred sixty-nine".

Divisors: 1 13 6178213 80316769