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83129365 = 5111511443
BaseRepresentation
bin1001111010001…
…11010000010101
312210102102001101
410331013100111
5132240114430
612125430101
72026405444
oct475072025
9183372041
1083129365
1142a19360
1223a0b331
13142b7897
14b07cd5b
157470dca
hex4f47415

83129365 has 8 divisors (see below), whose sum is σ = 108823968. Its totient is φ = 60457680.

The previous prime is 83129329. The next prime is 83129369. The reversal of 83129365 is 56392138.

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

It is not a de Polignac number, because 83129365 - 219 = 82605077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83129369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755667 + ... + 755776.

It is an arithmetic number, because the mean of its divisors is an integer number (13602996).

Almost surely, 283129365 is an apocalyptic number.

It is an amenable number.

83129365 is a deficient number, since it is larger than the sum of its proper divisors (25694603).

83129365 is a wasteful number, since it uses less digits than its factorization.

83129365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511459.

The product of its digits is 38880, while the sum is 37.

The square root of 83129365 is about 9117.5306415718. The cubic root of 83129365 is about 436.4335757202.

The spelling of 83129365 in words is "eighty-three million, one hundred twenty-nine thousand, three hundred sixty-five".

Divisors: 1 5 11 55 1511443 7557215 16625873 83129365