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2208220 = 225715773
BaseRepresentation
bin1000011011000111011100
311011012002221
420123013130
51031130340
6115155124
724524650
oct10330734
94135087
102208220
111279083
128a5aa4
135c4151
14416a60
152d944a
hex21b1dc

2208220 has 24 divisors (see below), whose sum is σ = 5300064. Its totient is φ = 757056.

The previous prime is 2208203. The next prime is 2208229. The reversal of 2208220 is 228022.

2208220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2208194 and 2208203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7747 + ... + 8026.

It is an arithmetic number, because the mean of its divisors is an integer number (220836).

22208220 is an apocalyptic number.

2208220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2208220 is an abundant number, since it is smaller than the sum of its proper divisors (3091844).

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

2208220 is a wasteful number, since it uses less digits than its factorization.

2208220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15789 (or 15787 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2208220 is about 1486.0080753482. The cubic root of 2208220 is about 130.2209261136.

The spelling of 2208220 in words is "two million, two hundred eight thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 15773 31546 63092 78865 110411 157730 220822 315460 441644 552055 1104110 2208220