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82390908 = 22317403877
BaseRepresentation
bin1001110100100…
…10111101111100
312202000220002010
410322102331330
5132043002113
612101531220
72020211505
oct472227574
9182026063
1082390908
1142564566
1223713b10
13140b9722
14ad29bac
1573771c3
hex4e92f7c

82390908 has 24 divisors (see below), whose sum is σ = 203554512. Its totient is φ = 25848064.

The previous prime is 82390907. The next prime is 82390933. The reversal of 82390908 is 80909328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82390907) 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, 201735 + ... + 202142.

It is an arithmetic number, because the mean of its divisors is an integer number (8481438).

Almost surely, 282390908 is an apocalyptic number.

It is an amenable number.

82390908 is an abundant number, since it is smaller than the sum of its proper divisors (121163604).

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

82390908 is a wasteful number, since it uses less digits than its factorization.

82390908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403901 (or 403899 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 82390908 is about 9076.9437587770. The cubic root of 82390908 is about 435.1374172800.

The spelling of 82390908 in words is "eighty-two million, three hundred ninety thousand, nine hundred eight".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 403877 807754 1211631 1615508 2423262 4846524 6865909 13731818 20597727 27463636 41195454 82390908