Search a number
-
+
82337680 = 2451676163
BaseRepresentation
bin1001110100001…
…01111110010000
312201221012001201
410322011332100
5132034301210
612100440544
72016600355
oct472057620
9181835051
1082337680
1142528577
12236a9154
131409b429
14ad1462c
15736653a
hex4e85f90

82337680 has 40 divisors (see below), whose sum is σ = 192612672. Its totient is φ = 32732544.

The previous prime is 82337663. The next prime is 82337687. The reversal of 82337680 is 8673328.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (82337687) 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 7 ways as a sum of consecutive naturals, for example, 10279 + ... + 16441.

Almost surely, 282337680 is an apocalyptic number.

82337680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82337680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96306336).

82337680 is an abundant number, since it is smaller than the sum of its proper divisors (110274992).

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

82337680 is a wasteful number, since it uses less digits than its factorization.

82337680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343 (or 6337 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 82337680 is about 9074.0112409011. The cubic root of 82337680 is about 435.0436913881.

It can be divided in two parts, 823 and 37680, that added together give a triangular number (38503 = T277).

The spelling of 82337680 in words is "eighty-two million, three hundred thirty-seven thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 167 334 668 835 1336 1670 2672 3340 6163 6680 12326 13360 24652 30815 49304 61630 98608 123260 246520 493040 1029221 2058442 4116884 5146105 8233768 10292210 16467536 20584420 41168840 82337680