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4282720 = 255132971
BaseRepresentation
bin10000010101100101100000
322001120210021
4100111211200
52044021340
6231443224
751255031
oct20254540
98046707
104282720
112465742
121526514
13b6c470
147d6a88
15598e4a
hex415960

4282720 has 96 divisors (see below), whose sum is σ = 11430720. Its totient is φ = 1505280.

The previous prime is 4282711. The next prime is 4282723. The reversal of 4282720 is 272824.

4282720 = 2242 + 2252 + ... + 2882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4282723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60285 + ... + 60355.

It is an arithmetic number, because the mean of its divisors is an integer number (119070).

Almost surely, 24282720 is an apocalyptic number.

4282720 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 4282720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5715360).

4282720 is an abundant number, since it is smaller than the sum of its proper divisors (7148000).

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

4282720 is a wasteful number, since it uses less digits than its factorization.

4282720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 4282720 is about 2069.4733629598. The cubic root of 4282720 is about 162.3952144966.

The spelling of 4282720 in words is "four million, two hundred eighty-two thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 13 16 20 26 29 32 40 52 58 65 71 80 104 116 130 142 145 160 208 232 260 284 290 355 377 416 464 520 568 580 710 754 923 928 1040 1136 1160 1420 1508 1846 1885 2059 2080 2272 2320 2840 3016 3692 3770 4118 4615 4640 5680 6032 7384 7540 8236 9230 10295 11360 12064 14768 15080 16472 18460 20590 26767 29536 30160 32944 36920 41180 53534 60320 65888 73840 82360 107068 133835 147680 164720 214136 267670 329440 428272 535340 856544 1070680 2141360 4282720