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83806541 = 713920951
BaseRepresentation
bin1001111111011…
…00100101001101
312211200210221222
410333230211031
5132423302131
612152133125
72035225640
oct477544515
9184623858
1083806541
1143341105
12240971a5
1314493b90
14b1b7a57
15755687b
hex4fec94d

83806541 has 8 divisors (see below), whose sum is σ = 103146624. Its totient is φ = 66308400.

The previous prime is 83806537. The next prime is 83806543. The reversal of 83806541 is 14560838.

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 83806541 - 22 = 83806537 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83806543) 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, 460385 + ... + 460566.

It is an arithmetic number, because the mean of its divisors is an integer number (12893328).

Almost surely, 283806541 is an apocalyptic number.

It is an amenable number.

83806541 is a deficient number, since it is larger than the sum of its proper divisors (19340083).

83806541 is a wasteful number, since it uses less digits than its factorization.

83806541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920971.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 83806541 is about 9154.5912524809. The cubic root of 83806541 is about 437.6154422977.

The spelling of 83806541 in words is "eighty-three million, eight hundred six thousand, five hundred forty-one".

Divisors: 1 7 13 91 920951 6446657 11972363 83806541