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202220 = 22510111
BaseRepresentation
bin110001010111101100
3101021101122
4301113230
522432340
64200112
71501364
oct612754
9337348
10202220
11128a27
1299038
1371075
14539a4
153edb5
hex315ec

202220 has 12 divisors (see below), whose sum is σ = 424704. Its totient is φ = 80880.

The previous prime is 202219. The next prime is 202231. The reversal of 202220 is 22202.

It is a junction number, because it is equal to n+sod(n) for n = 202198 and 202207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036 + ... + 5075.

It is an arithmetic number, because the mean of its divisors is an integer number (35392).

2202220 is an apocalyptic number.

202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202220 is an abundant number, since it is smaller than the sum of its proper divisors (222484).

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

202220 is a wasteful number, since it uses less digits than its factorization.

202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10120 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 202220 is about 449.6887812699. The cubic root of 202220 is about 58.6959363816.

Adding to 202220 its reverse (22202), we get a palindrome (224422).

The spelling of 202220 in words is "two hundred two thousand, two hundred twenty", and thus it is an iban number.

Divisors: 1 2 4 5 10 20 10111 20222 40444 50555 101110 202220