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67082020 = 2255775813
BaseRepresentation
bin1111111111100…
…1011100100100
311200020010020021
43333321130210
5114133111040
610353444524
71443121255
oct377713444
9150203207
1067082020
1134958795
121a570744
1310b89605
148ca2b2c
155d5124a
hex3ff9724

67082020 has 24 divisors (see below), whose sum is σ = 141140664. Its totient is φ = 26781696.

The previous prime is 67082003. The next prime is 67082023. The reversal of 67082020 is 2028076.

It can be written as a sum of positive squares in 4 ways, for example, as 32695524 + 34386496 = 5718^2 + 5864^2 .

It is not an unprimeable number, because it can be changed into a prime (67082023) 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 7 ways as a sum of consecutive naturals, for example, 8634 + ... + 14446.

It is an arithmetic number, because the mean of its divisors is an integer number (5880861).

Almost surely, 267082020 is an apocalyptic number.

It is an amenable number.

67082020 is an abundant number, since it is smaller than the sum of its proper divisors (74058644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67082020 is a wasteful number, since it uses less digits than its factorization.

67082020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399 (or 6397 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 67082020 is about 8190.3614083873. The cubic root of 67082020 is about 406.3204778711.

The spelling of 67082020 in words is "sixty-seven million, eighty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 577 1154 2308 2885 5770 5813 11540 11626 23252 29065 58130 116260 3354101 6708202 13416404 16770505 33541010 67082020