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82371384 = 23331920071
BaseRepresentation
bin1001110100011…
…10001100111000
312201222220022000
410322032030320
5132041341014
612101301000
72020100544
oct472161470
9181886260
1082371384
1142550927
1223704760
13140b0884
14ad22a24
157371509
hex4e8e338

82371384 has 64 divisors (see below), whose sum is σ = 240864000. Its totient is φ = 26010720.

The previous prime is 82371347. The next prime is 82371389. The reversal of 82371384 is 48317328.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82371389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5932 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (3763500).

Almost surely, 282371384 is an apocalyptic number.

It is an amenable number.

82371384 is an abundant number, since it is smaller than the sum of its proper divisors (158492616).

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

82371384 is a wasteful number, since it uses less digits than its factorization.

82371384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20105 (or 20095 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 82371384 is about 9075.8682229305. The cubic root of 82371384 is about 435.1030433655.

The spelling of 82371384 in words is "eighty-two million, three hundred seventy-one thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 27 36 38 54 57 72 76 108 114 152 171 216 228 342 456 513 684 1026 1368 2052 4104 20071 40142 60213 80284 120426 160568 180639 240852 361278 381349 481704 541917 722556 762698 1083834 1144047 1445112 1525396 2167668 2288094 3050792 3432141 4335336 4576188 6864282 9152376 10296423 13728564 20592846 27457128 41185692 82371384