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2022220 = 225101111
BaseRepresentation
bin111101101101101001100
310210201222001
413231231030
51004202340
6111202044
723121454
oct7555514
93721861
102022220
111161362
12816324
1355a5a5
143a8d64
1529e29a
hex1edb4c

2022220 has 12 divisors (see below), whose sum is σ = 4246704. Its totient is φ = 808880.

The previous prime is 2022217. The next prime is 2022233. The reversal of 2022220 is 222202.

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 = 2022197 and 2022206.

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 3 ways as a sum of consecutive naturals, for example, 50536 + ... + 50575.

It is an arithmetic number, because the mean of its divisors is an integer number (353892).

22022220 is an apocalyptic number.

2022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2022220 is an abundant number, since it is smaller than the sum of its proper divisors (2224484).

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

2022220 is a wasteful number, since it uses less digits than its factorization.

2022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101120 (or 101118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2022220 is about 1422.0478191678. The cubic root of 2022220 is about 126.4569783974.

Adding to 2022220 its reverse (222202), we get a palindrome (2244422).

The spelling of 2022220 in words is "two million, twenty-two thousand, two hundred twenty".