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4978800 = 243352461
BaseRepresentation
bin10010111111100001110000
3100100221122000
4102333201300
52233310200
6254414000
760214311
oct22774160
910327560
104978800
1128a0712
121801300
131054248
14938608
15685300
hex4bf870

4978800 has 120 divisors (see below), whose sum is σ = 17759280. Its totient is φ = 1324800.

The previous prime is 4978783. The next prime is 4978801. The reversal of 4978800 is 88794.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10570 + ... + 11030.

It is an arithmetic number, because the mean of its divisors is an integer number (147994).

Almost surely, 24978800 is an apocalyptic number.

4978800 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 4978800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8879640).

4978800 is an abundant number, since it is smaller than the sum of its proper divisors (12780480).

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

4978800 is a wasteful number, since it uses less digits than its factorization.

4978800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 4978800 is about 2231.3224778144. The cubic root of 4978800 is about 170.7555756907.

It can be divided in two parts, 4978 and 800, that added together give a triangular number (5778 = T107).

The spelling of 4978800 in words is "four million, nine hundred seventy-eight thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 36 40 45 48 50 54 60 72 75 80 90 100 108 120 135 144 150 180 200 216 225 240 270 300 360 400 432 450 461 540 600 675 720 900 922 1080 1200 1350 1383 1800 1844 2160 2305 2700 2766 3600 3688 4149 4610 5400 5532 6915 7376 8298 9220 10800 11064 11525 12447 13830 16596 18440 20745 22128 23050 24894 27660 33192 34575 36880 41490 46100 49788 55320 62235 66384 69150 82980 92200 99576 103725 110640 124470 138300 165960 184400 199152 207450 248940 276600 311175 331920 414900 497880 553200 622350 829800 995760 1244700 1659600 2489400 4978800