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82424223 = 3472191093
BaseRepresentation
bin1001110100110…
…11000110011111
312202002120210000
410322123012133
5132100033343
612102345343
72020410600
oct472330637
9182076700
1082424223
11425875a2
122372b253
13140cb93b
14ad37da7
157381ed3
hex4e9b19f

82424223 has 60 divisors (see below), whose sum is σ = 150906360. Its totient is φ = 44579808.

The previous prime is 82424219. The next prime is 82424231. The reversal of 82424223 is 32242428.

It is not a de Polignac number, because 82424223 - 22 = 82424219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82424213) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 74865 + ... + 75957.

It is an arithmetic number, because the mean of its divisors is an integer number (2515106).

Almost surely, 282424223 is an apocalyptic number.

82424223 is a deficient number, since it is larger than the sum of its proper divisors (68482137).

82424223 is a wasteful number, since it uses less digits than its factorization.

82424223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1122 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 82424223 is about 9078.7787174267. The cubic root of 82424223 is about 435.1960590644.

The spelling of 82424223 in words is "eighty-two million, four hundred twenty-four thousand, two hundred twenty-three".

Divisors: 1 3 7 9 19 21 27 49 57 63 81 133 147 171 189 399 441 513 567 931 1093 1197 1323 1539 2793 3279 3591 3969 7651 8379 9837 10773 20767 22953 25137 29511 53557 62301 68859 75411 88533 145369 160671 186903 206577 436107 482013 560709 619731 1017583 1308321 1446039 1682127 3052749 3924963 4338117 9158247 11774889 27474741 82424223