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82928885 = 5131275829
BaseRepresentation
bin1001111000101…
…10010011110101
312210001020001012
410330112103311
5132212211020
612121242005
72024612114
oct474262365
9183036035
1082928885
11428a1776
1223933305
1314247560
14b029c7b
1574317c5
hex4f164f5

82928885 has 8 divisors (see below), whose sum is σ = 107169720. Its totient is φ = 61239744.

The previous prime is 82928861. The next prime is 82928891. The reversal of 82928885 is 58882928.

It can be written as a sum of positive squares in 4 ways, for example, as 6436369 + 76492516 = 2537^2 + 8746^2 .

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 82928885 - 212 = 82924789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637850 + ... + 637979.

It is an arithmetic number, because the mean of its divisors is an integer number (13396215).

Almost surely, 282928885 is an apocalyptic number.

It is an amenable number.

82928885 is a deficient number, since it is larger than the sum of its proper divisors (24240835).

82928885 is a wasteful number, since it uses less digits than its factorization.

82928885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275847.

The product of its digits is 737280, while the sum is 50.

The square root of 82928885 is about 9106.5298000940. The cubic root of 82928885 is about 436.0824497582.

The spelling of 82928885 in words is "eighty-two million, nine hundred twenty-eight thousand, eight hundred eighty-five".

Divisors: 1 5 13 65 1275829 6379145 16585777 82928885