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4745209 = 72113857
BaseRepresentation
bin10010000110011111111001
322221002012111
4102012133321
52203321314
6245412321
755222300
oct22063771
98832174
104745209
112751167
12170a0a1
13ca1b21
148b7437
1563aec4
hex4867f9

4745209 has 12 divisors (see below), whose sum is σ = 5575284. Its totient is φ = 4026624.

The previous prime is 4745197. The next prime is 4745243. The reversal of 4745209 is 9025474.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 2706025 = 1428^2 + 1645^2 .

It is not a de Polignac number, because 4745209 - 25 = 4745177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4748209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5109 + ... + 5965.

It is an arithmetic number, because the mean of its divisors is an integer number (464607).

Almost surely, 24745209 is an apocalyptic number.

4745209 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4745209 is a deficient number, since it is larger than the sum of its proper divisors (830075).

4745209 is a wasteful number, since it uses less digits than its factorization.

4745209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 4745209 is about 2178.3500636950. The cubic root of 4745209 is about 168.0422347518.

The spelling of 4745209 in words is "four million, seven hundred forty-five thousand, two hundred nine".

Divisors: 1 7 49 113 791 857 5537 5999 41993 96841 677887 4745209