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83074285 = 578328597
BaseRepresentation
bin1001111001110…
…01110011101101
312210022121111101
410330321303231
5132231334120
612124323101
72026056040
oct474716355
9183277441
1083074285
1142990a38
12239a3491
13142987a8
14b066c57
15745e90a
hex4f39ced

83074285 has 16 divisors (see below), whose sum is σ = 115307136. Its totient is φ = 56276928.

The previous prime is 83074283. The next prime is 83074297. The reversal of 83074285 is 58247038.

It is a cyclic number.

It is not a de Polignac number, because 83074285 - 21 = 83074283 is a prime.

It is a super-2 number, since 2×830742852 = 13802673656522450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83074283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11394 + ... + 17203.

It is an arithmetic number, because the mean of its divisors is an integer number (7206696).

Almost surely, 283074285 is an apocalyptic number.

It is an amenable number.

83074285 is a deficient number, since it is larger than the sum of its proper divisors (32232851).

83074285 is a wasteful number, since it uses less digits than its factorization.

83074285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28692.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 83074285 is about 9114.5095863683. The cubic root of 83074285 is about 436.3371634495.

The spelling of 83074285 in words is "eighty-three million, seventy-four thousand, two hundred eighty-five".

Divisors: 1 5 7 35 83 415 581 2905 28597 142985 200179 1000895 2373551 11867755 16614857 83074285