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4705680 = 243572801
BaseRepresentation
bin10001111100110110010000
322212001222110
4101330312100
52201040210
6244505320
754666120
oct21746620
98761873
104705680
1127244a1
1216ab240
13c89b35
148a6c80
1562e420
hex47cd90

4705680 has 80 divisors (see below), whose sum is σ = 16677504. Its totient is φ = 1075200.

The previous prime is 4705669. The next prime is 4705681. The reversal of 4705680 is 865074.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (4705681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280 + ... + 3080.

Almost surely, 24705680 is an apocalyptic number.

4705680 is a gapful number since it is divisible by the number (40) 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 4705680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8338752).

4705680 is an abundant number, since it is smaller than the sum of its proper divisors (11971824).

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

4705680 is a wasteful number, since it uses less digits than its factorization.

4705680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 4705680 is about 2169.2579376367. The cubic root of 4705680 is about 167.5743191400.

Subtracting from 4705680 its reverse (865074), we obtain a triangular number (3840606 = T2771).

The spelling of 4705680 in words is "four million, seven hundred five thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 80 84 105 112 120 140 168 210 240 280 336 420 560 840 1680 2801 5602 8403 11204 14005 16806 19607 22408 28010 33612 39214 42015 44816 56020 58821 67224 78428 84030 98035 112040 117642 134448 156856 168060 196070 224080 235284 294105 313712 336120 392140 470568 588210 672240 784280 941136 1176420 1568560 2352840 4705680