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2202022220 = 225971135063
BaseRepresentation
bin1000001101000000…
…0011000101001100
312200110111022121112
42003100003011030
514002204202340
61002300551152
7105365610566
oct20320030514
95613438545
102202022220
11a2aa90982
125155524b8
1329128bc38
1416c646336
15cd4bb065
hex8340314c

2202022220 has 24 divisors (see below), whose sum is σ = 4671923424. Its totient is φ = 871727616.

The previous prime is 2202022213. The next prime is 2202022241. The reversal of 2202022220 is 222202022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2202022195 and 2202022204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565592 + ... + 569471.

It is an arithmetic number, because the mean of its divisors is an integer number (194663476).

Almost surely, 22202022220 is an apocalyptic number.

2202022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2202022220 is an abundant number, since it is smaller than the sum of its proper divisors (2469901204).

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

2202022220 is a wasteful number, since it uses less digits than its factorization.

2202022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135169 (or 1135167 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2202022220 is about 46925.7095844059. The cubic root of 2202022220 is about 1300.9898220935.

Adding to 2202022220 its reverse (222202022), we get a palindrome (2424224242).

The spelling of 2202022220 in words is "two billion, two hundred two million, twenty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 97 194 388 485 970 1940 1135063 2270126 4540252 5675315 11350630 22701260 110101111 220202222 440404444 550505555 1101011110 2202022220