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47223130 = 254722313
BaseRepresentation
bin1011010000100…
…1000101011010
310021212011221211
42310021011122
544042120010
64404053334
71112250523
oct264110532
9107764854
1047223130
1124724489
121399424a
139a254a6
1463b384a
15422c08a
hex2d0915a

47223130 has 8 divisors (see below), whose sum is σ = 85001652. Its totient is φ = 18889248.

The previous prime is 47223097. The next prime is 47223139. The reversal of 47223130 is 3132274.

It can be written as a sum of positive squares in 2 ways, for example, as 42029289 + 5193841 = 6483^2 + 2279^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47223139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2361147 + ... + 2361166.

Almost surely, 247223130 is an apocalyptic number.

47223130 is a deficient number, since it is larger than the sum of its proper divisors (37778522).

47223130 is a wasteful number, since it uses less digits than its factorization.

47223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4722320.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 47223130 is about 6871.9087595806. The cubic root of 47223130 is about 361.4527969782.

The spelling of 47223130 in words is "forty-seven million, two hundred twenty-three thousand, one hundred thirty".

Divisors: 1 2 5 10 4722313 9444626 23611565 47223130