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5180820 = 2235791093
BaseRepresentation
bin10011110000110110010100
3100202012202020
4103300312110
52311241240
6303013140
762015301
oct23606624
910665666
105180820
112a19477
12189a1b0
1310c5198
1498c0a8
156c50d0
hex4f0d94

5180820 has 48 divisors (see below), whose sum is σ = 14703360. Its totient is φ = 1362816.

The previous prime is 5180809. The next prime is 5180827. The reversal of 5180820 is 280815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5180827) 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, 4194 + ... + 5286.

It is an arithmetic number, because the mean of its divisors is an integer number (306320).

Almost surely, 25180820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5180820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7351680).

5180820 is an abundant number, since it is smaller than the sum of its proper divisors (9522540).

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

5180820 is a wasteful number, since it uses less digits than its factorization.

5180820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 5180820 is about 2276.1414718774. The cubic root of 5180820 is about 173.0345526672.

The spelling of 5180820 in words is "five million, one hundred eighty thousand, eight hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 79 158 237 316 395 474 790 948 1093 1185 1580 2186 2370 3279 4372 4740 5465 6558 10930 13116 16395 21860 32790 65580 86347 172694 259041 345388 431735 518082 863470 1036164 1295205 1726940 2590410 5180820