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82730908 = 221321723313
BaseRepresentation
bin1001110111001…
…01111110011100
312202200011110201
410323211332130
5132134342113
612113113244
72023125661
oct473457634
9182604421
1082730908
1142776a57
1223858824
13141a8400
14adb7a68
1573e2cdd
hex4ee5f9c

82730908 has 72 divisors (see below), whose sum is σ = 173765088. Its totient is φ = 34265088.

The previous prime is 82730903. The next prime is 82730953. The reversal of 82730908 is 80903728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82730903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264160 + ... + 264472.

It is an arithmetic number, because the mean of its divisors is an integer number (2413404).

Almost surely, 282730908 is an apocalyptic number.

It is an amenable number.

82730908 is an abundant number, since it is smaller than the sum of its proper divisors (91034180).

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

82730908 is a wasteful number, since it uses less digits than its factorization.

82730908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 82730908 is about 9095.6532475683. The cubic root of 82730908 is about 435.7351518347.

It can be divided in two parts, 82730 and 908, that added together give a palindrome (83638).

The spelling of 82730908 in words is "eighty-two million, seven hundred thirty thousand, nine hundred eight".

Divisors: 1 2 4 13 17 23 26 34 46 52 68 92 169 221 299 313 338 391 442 598 626 676 782 884 1196 1252 1564 2873 3887 4069 5083 5321 5746 7199 7774 8138 10166 10642 11492 14398 15548 16276 20332 21284 28796 52897 66079 69173 93587 105794 122383 132158 138346 187174 211588 244766 264316 276692 374348 489532 899249 1216631 1590979 1798498 2433262 3181958 3596996 4866524 6363916 20682727 41365454 82730908