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2270808409 = 476532
BaseRepresentation
bin1000011101011001…
…1100100101011001
312212020221000112011
42013112130211121
514122311332114
61013155145521
7110162360452
oct20726344531
95766830464
102270808409
11a658a2a71
125345a52a1
132a25c411c
14177830129
15d45571c4
hex8759c959

2270808409 has 3 divisors (see below), whose sum is σ = 2270856063. Its totient is φ = 2270760756.

The previous prime is 2270808403. The next prime is 2270808413. The reversal of 2270808409 is 9048080722.

The square root of 2270808409 is 47653.

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

2270808409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 720654025 + 1550154384 = 26845^2 + 39372^2 .

It is not a de Polignac number, because 2270808409 - 29 = 2270807897 is a prime.

It is a super-2 number, since 2×22708084092 = 10313141660770222562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2270808403) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 23827 + ... + 71479.

It is an arithmetic number, because the mean of its divisors is an integer number (756952021).

Almost surely, 22270808409 is an apocalyptic number.

2270808409 is the 47653-rd square number.

2270808409 is the 23827-th centered octagonal number.

It is an amenable number.

2270808409 is a deficient number, since it is larger than the sum of its proper divisors (47654).

2270808409 is an frugal number, since it uses more digits than its factorization.

2270808409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95306 (or 47653 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The cubic root of 2270808409 is about 1314.3978234365.

The spelling of 2270808409 in words is "two billion, two hundred seventy million, eight hundred eight thousand, four hundred nine".

Divisors: 1 47653 2270808409