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10210220 = 2251997277
BaseRepresentation
bin100110111100…
…101110101100
3201012201210022
4212330232230
510103211340
61002501312
7152533256
oct46745654
921181708
1010210220
1158440a9
123504838
132166467
1414dacd6
15d6a3b5
hex9bcbac

10210220 has 48 divisors (see below), whose sum is σ = 22884960. Its totient is φ = 3815424.

The previous prime is 10210219. The next prime is 10210223. The reversal of 10210220 is 2201201.

It is a junction number, because it is equal to n+sod(n) for n = 10210198 and 10210207.

It is not an unprimeable number, because it can be changed into a prime (10210223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36722 + ... + 36998.

It is an arithmetic number, because the mean of its divisors is an integer number (476770).

Almost surely, 210210220 is an apocalyptic number.

10210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11442480).

10210220 is an abundant number, since it is smaller than the sum of its proper divisors (12674740).

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

10210220 is a wasteful number, since it uses less digits than its factorization.

10210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 400 counting only the distinct ones).

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

The square root of 10210220 is about 3195.3434870136. The cubic root of 10210220 is about 216.9426961887.

Adding to 10210220 its reverse (2201201), we get a palindrome (12411421).

The spelling of 10210220 in words is "ten million, two hundred ten thousand, two hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 97 190 194 277 380 388 485 554 970 1108 1385 1843 1940 2770 3686 5263 5540 7372 9215 10526 18430 21052 26315 26869 36860 52630 53738 105260 107476 134345 268690 510511 537380 1021022 2042044 2552555 5105110 10210220