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2020152220 = 225101007611
BaseRepresentation
bin111100001101001…
…0001001110011100
312012210021100212121
41320122101032130
513114124332340
6532242512324
7101030003422
oct17032211634
95183240777
102020152220
11947361299
124846656a4
132626b1b58
14152423112
15bc54394a
hex7869139c

2020152220 has 12 divisors (see below), whose sum is σ = 4242319704. Its totient is φ = 808060880.

The previous prime is 2020152217. The next prime is 2020152227. The reversal of 2020152220 is 222510202.

It is a junction number, because it is equal to n+sod(n) for n = 2020152194 and 2020152203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020152227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50503786 + ... + 50503825.

It is an arithmetic number, because the mean of its divisors is an integer number (353526642).

Almost surely, 22020152220 is an apocalyptic number.

2020152220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020152220 is an abundant number, since it is smaller than the sum of its proper divisors (2222167484).

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

2020152220 is a wasteful number, since it uses less digits than its factorization.

2020152220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101007620 (or 101007618 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2020152220 is about 44946.1035018610. The cubic root of 2020152220 is about 1264.1386169282.

Adding to 2020152220 its reverse (222510202), we get a palindrome (2242662422).

The spelling of 2020152220 in words is "two billion, twenty million, one hundred fifty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 101007611 202015222 404030444 505038055 1010076110 2020152220