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2202020220 = 223537991901
BaseRepresentation
bin1000001101000000…
…0010100101111100
312200110111012212110
42003100002211330
514002204121340
61002300534020
7105365602011
oct20320024574
95613435773
102202020220
11a2aa8a424
12515551310
1329128b05a
1416c645708
15cd4ba680
hex8340297c

2202020220 has 48 divisors (see below), whose sum is σ = 6332302368. Its totient is φ = 571334400.

The previous prime is 2202020213. The next prime is 2202020237. The reversal of 2202020220 is 220202022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2202020196 and 2202020205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493731 + ... + 498170.

It is an arithmetic number, because the mean of its divisors is an integer number (131922966).

Almost surely, 22202020220 is an apocalyptic number.

2202020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2202020220 is an abundant number, since it is smaller than the sum of its proper divisors (4130282148).

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

2202020220 is a wasteful number, since it uses less digits than its factorization.

2202020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991950 (or 991948 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2202020220 is about 46925.6882741212. The cubic root of 2202020220 is about 1300.9894282161.

Adding to 2202020220 its reverse (220202022), we get a palindrome (2422222242).

The spelling of 2202020220 in words is "two billion, two hundred two million, twenty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 37 60 74 111 148 185 222 370 444 555 740 1110 2220 991901 1983802 2975703 3967604 4959505 5951406 9919010 11902812 14878515 19838020 29757030 36700337 59514060 73400674 110101011 146801348 183501685 220202022 367003370 440404044 550505055 734006740 1101010110 2202020220