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2210020 = 225110501
BaseRepresentation
bin1000011011100011100100
311011021120121
420123203210
51031210040
6115211324
724533131
oct10334344
94137517
102210020
11127a46a
128a6b44
135c4c07
14417588
152d9c4a
hex21b8e4

2210020 has 12 divisors (see below), whose sum is σ = 4641084. Its totient is φ = 884000.

The previous prime is 2210011. The next prime is 2210027. The reversal of 2210020 is 200122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1378276 + 831744 = 1174^2 + 912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2209985 and 2210012.

It is not an unprimeable number, because it can be changed into a prime (2210027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55231 + ... + 55270.

It is an arithmetic number, because the mean of its divisors is an integer number (386757).

22210020 is an apocalyptic number.

2210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2210020 is an abundant number, since it is smaller than the sum of its proper divisors (2431064).

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

2210020 is a wasteful number, since it uses less digits than its factorization.

2210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110510 (or 110508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 2210020 is about 1486.6136014446. The cubic root of 2210020 is about 130.2562990999.

Adding to 2210020 its reverse (200122), we get a palindrome (2410142).

The spelling of 2210020 in words is "two million, two hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 110501 221002 442004 552505 1105010 2210020