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7041620 = 225352081
BaseRepresentation
bin11010110111001001010100
3111020202021202
4122313021110
53300312440
6410532032
7113565335
oct32671124
914222252
107041620
113a7a523
122437018
1315c7151
14d1428c
15941615
hex6b7254

7041620 has 12 divisors (see below), whose sum is σ = 14787444. Its totient is φ = 2816640.

The previous prime is 7041569. The next prime is 7041623. The reversal of 7041620 is 261407.

It can be written as a sum of positive squares in 2 ways, for example, as 4519876 + 2521744 = 2126^2 + 1588^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 352081 = 7041620 / (7 + 0 + 4 + 1 + 6 + 2 + 0).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7041592 and 7041601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7041623) 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, 176021 + ... + 176060.

It is an arithmetic number, because the mean of its divisors is an integer number (1232287).

Almost surely, 27041620 is an apocalyptic number.

It is an amenable number.

7041620 is an abundant number, since it is smaller than the sum of its proper divisors (7745824).

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

7041620 is a wasteful number, since it uses less digits than its factorization.

7041620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352090 (or 352088 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 7041620 is about 2653.6050949604. The cubic root of 7041620 is about 191.6714941023.

The spelling of 7041620 in words is "seven million, forty-one thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 352081 704162 1408324 1760405 3520810 7041620