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2020213220 = 225475473929
BaseRepresentation
bin111100001101010…
…0000000111100100
312012210101110112212
41320122200013210
513114133310340
6532244102552
7101030346314
oct17032400744
95183343485
102020213220
119473a3103
12484694a58
1326270384c
1415243b444
15bc556a65
hex786a01e4

2020213220 has 48 divisors (see below), whose sum is σ = 4341738240. Its totient is φ = 789245184.

The previous prime is 2020213199. The next prime is 2020213249. The reversal of 2020213220 is 223120202.

It is a super-2 number, since 2×20202132202 = 8162522908525536800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2020213195 and 2020213204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512216 + ... + 516144.

It is an arithmetic number, because the mean of its divisors is an integer number (90452880).

Almost surely, 22020213220 is an apocalyptic number.

2020213220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020213220 is an abundant number, since it is smaller than the sum of its proper divisors (2321525020).

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

2020213220 is a wasteful number, since it uses less digits than its factorization.

2020213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532 (or 4530 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2020213220 is about 44946.7820872640. The cubic root of 2020213220 is about 1264.1513406690.

Adding to 2020213220 its reverse (223120202), we get a palindrome (2243333422).

The spelling of 2020213220 in words is "two billion, twenty million, two hundred thirteen thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 547 940 1094 2188 2735 3929 5470 7858 10940 15716 19645 25709 39290 51418 78580 102836 128545 184663 257090 369326 514180 738652 923315 1846630 2149163 3693260 4298326 8596652 10745815 21491630 42983260 101010661 202021322 404042644 505053305 1010106610 2020213220