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82020888 = 233210111279
BaseRepresentation
bin1001110001110…
…00101000011000
312201100002111200
410320320220120
5131444132023
612045554200
72014110645
oct470705030
9181302450
1082020888
1142331564
1223575960
1313cba191
14ac70dcc
157302743
hex4e38a18

82020888 has 48 divisors (see below), whose sum is σ = 224359200. Its totient is φ = 27067200.

The previous prime is 82020877. The next prime is 82020919. The reversal of 82020888 is 88802028.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1633 + ... + 12911.

It is an arithmetic number, because the mean of its divisors is an integer number (4674150).

Almost surely, 282020888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82020888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112179600).

82020888 is an abundant number, since it is smaller than the sum of its proper divisors (142338312).

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

82020888 is a wasteful number, since it uses less digits than its factorization.

82020888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11392 (or 11385 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 82020888 is about 9056.5384115566. The cubic root of 82020888 is about 434.4850346846.

The spelling of 82020888 in words is "eighty-two million, twenty thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 101 202 303 404 606 808 909 1212 1818 2424 3636 7272 11279 22558 33837 45116 67674 90232 101511 135348 203022 270696 406044 812088 1139179 2278358 3417537 4556716 6835074 9113432 10252611 13670148 20505222 27340296 41010444 82020888