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BaseRepresentation
bin1100011001101001111001
320010011021100
430121221321
51313011214
6153402013
736426402
oct14315171
96104240
103250809
111920421
121109309
1389a873
146089a9
15443309
hex319a79

3250809 has 9 divisors (see below), whose sum is σ = 4703439. Its totient is φ = 2163600.

The previous prime is 3250801. The next prime is 3250811. The reversal of 3250809 is 9080523.

The square root of 3250809 is 1803.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 518400 = 1653^2 + 720^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 3250809 - 23 = 3250801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3250801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5109 + ... + 5709.

Almost surely, 23250809 is an apocalyptic number.

3250809 is the 1803-rd square number.

3250809 is the 902-nd centered octagonal number.

It is an amenable number.

3250809 is a deficient number, since it is larger than the sum of its proper divisors (1452630).

3250809 is an frugal number, since it uses more digits than its factorization.

3250809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The cubic root of 3250809 is about 148.1370929613.

The spelling of 3250809 in words is "three million, two hundred fifty thousand, eight hundred nine".

Divisors: 1 3 9 601 1803 5409 361201 1083603 3250809