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7201420 = 225360071
BaseRepresentation
bin11011011110001010001100
3111112212111021
4123132022030
53320421140
6414203524
7115132252
oct33361214
914485437
107201420
114079596
1224b35a4
131651ac5
14d565d2
15973b4a
hex6de28c

7201420 has 12 divisors (see below), whose sum is σ = 15123024. Its totient is φ = 2880560.

The previous prime is 7201357. The next prime is 7201423. The reversal of 7201420 is 241027.

7201420 is digitally balanced in base 5, 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 = 7201394 and 7201403.

It is not an unprimeable number, because it can be changed into a prime (7201423) 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, 180016 + ... + 180055.

It is an arithmetic number, because the mean of its divisors is an integer number (1260252).

Almost surely, 27201420 is an apocalyptic number.

It is an amenable number.

7201420 is an abundant number, since it is smaller than the sum of its proper divisors (7921604).

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

7201420 is a wasteful number, since it uses less digits than its factorization.

7201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360080 (or 360078 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 7201420 is about 2683.5461613321. The cubic root of 7201420 is about 193.1105704841.

Adding to 7201420 its reverse (241027), we get a palindrome (7442447).

The spelling of 7201420 in words is "seven million, two hundred one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 360071 720142 1440284 1800355 3600710 7201420