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2020211020 = 225101010551
BaseRepresentation
bin111100001101001…
…1111100101001100
312012210101100112101
41320122133211030
513114133223040
6532244044444
7101030340022
oct17032374514
95183340471
102020211020
119473a1493
12484693724
13262702849
1415243a712
15bc55609a
hex7869f94c

2020211020 has 12 divisors (see below), whose sum is σ = 4242443184. Its totient is φ = 808084400.

The previous prime is 2020211009. The next prime is 2020211023. The reversal of 2020211020 is 201120202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2020210988 and 2020211006.

It is not an unprimeable number, because it can be changed into a prime (2020211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50505256 + ... + 50505295.

It is an arithmetic number, because the mean of its divisors is an integer number (353536932).

Almost surely, 22020211020 is an apocalyptic number.

2020211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020211020 is an abundant number, since it is smaller than the sum of its proper divisors (2222232164).

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

2020211020 is a wasteful number, since it uses less digits than its factorization.

2020211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010560 (or 101010558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2020211020 is about 44946.7576138702. The cubic root of 2020211020 is about 1264.1508817845.

Adding to 2020211020 its reverse (201120202), we get a palindrome (2221331222).

The spelling of 2020211020 in words is "two billion, twenty million, two hundred eleven thousand, twenty".

Divisors: 1 2 4 5 10 20 101010551 202021102 404042204 505052755 1010105510 2020211020