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4805920 = 25572613
BaseRepresentation
bin10010010101010100100000
3100001011111001
4102111110200
52212242140
6251001344
755564300
oct22252440
910034431
104805920
112792839
121739254
13cc3652
148d1600
1564de9a
hex495520

4805920 has 72 divisors (see below), whose sum is σ = 13229244. Its totient is φ = 1645056.

The previous prime is 4805903. The next prime is 4805929. The reversal of 4805920 is 295084.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3952144 + 853776 = 1988^2 + 924^2 .

It is a super-3 number, since 3×48059203 (a number of 21 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (4805929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7534 + ... + 8146.

Almost surely, 24805920 is an apocalyptic number.

4805920 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 4805920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6614622).

4805920 is an abundant number, since it is smaller than the sum of its proper divisors (8423324).

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

4805920 is a wasteful number, since it uses less digits than its factorization.

4805920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 4805920 is about 2192.2408626791. The cubic root of 4805920 is about 168.7558534778.

It can be divided in two parts, 480 and 5920, that added together give a square (6400 = 802).

The spelling of 4805920 in words is "four million, eight hundred five thousand, nine hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 70 80 98 112 140 160 196 224 245 280 392 490 560 613 784 980 1120 1226 1568 1960 2452 3065 3920 4291 4904 6130 7840 8582 9808 12260 17164 19616 21455 24520 30037 34328 42910 49040 60074 68656 85820 98080 120148 137312 150185 171640 240296 300370 343280 480592 600740 686560 961184 1201480 2402960 4805920