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7630145 = 55328793
BaseRepresentation
bin11101000110110101000001
3112100122120222
4131012311001
53423131040
6431312425
7121566215
oct35066501
915318528
107630145
114341706
12267b715
131771ca3
141028945
15a0abb5
hex746d41

7630145 has 8 divisors (see below), whose sum is σ = 9329256. Its totient is φ = 5988736.

The previous prime is 7630111. The next prime is 7630159. The reversal of 7630145 is 5410367.

It can be written as a sum of positive squares in 4 ways, for example, as 744769 + 6885376 = 863^2 + 2624^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7630145 - 26 = 7630081 is a prime.

It is a super-2 number, since 2×76301452 = 116438225442050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

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, 14132 + ... + 14661.

It is an arithmetic number, because the mean of its divisors is an integer number (1166157).

Almost surely, 27630145 is an apocalyptic number.

It is an amenable number.

7630145 is a deficient number, since it is larger than the sum of its proper divisors (1699111).

7630145 is a wasteful number, since it uses less digits than its factorization.

7630145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28851.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 7630145 is about 2762.2717100242. The cubic root of 7630145 is about 196.8691186620.

The spelling of 7630145 in words is "seven million, six hundred thirty thousand, one hundred forty-five".

Divisors: 1 5 53 265 28793 143965 1526029 7630145