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30023273 = 771193313
BaseRepresentation
bin111001010000…
…1111001101001
32002111100012002
41302201321221
530141221043
62551300345
7513123260
oct162417151
962440162
1030023273
1115a46a25
12a07a6b5
1362b2767
143db75d7
152980bb8
hex1ca1e69

30023273 has 16 divisors (see below), whose sum is σ = 35087616. Its totient is φ = 25159680.

The previous prime is 30023261. The next prime is 30023293. The reversal of 30023273 is 37232003.

It is not a de Polignac number, because 30023273 - 26 = 30023209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30023293) 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 15 ways as a sum of consecutive naturals, for example, 95765 + ... + 96077.

It is an arithmetic number, because the mean of its divisors is an integer number (2192976).

Almost surely, 230023273 is an apocalyptic number.

It is an amenable number.

30023273 is a deficient number, since it is larger than the sum of its proper divisors (5064343).

30023273 is a wasteful number, since it uses less digits than its factorization.

30023273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 30023273 is about 5479.3496876910. The cubic root of 30023273 is about 310.8035794070.

Adding to 30023273 its reverse (37232003), we get a palindrome (67255276).

The spelling of 30023273 in words is "thirty million, twenty-three thousand, two hundred seventy-three".

Divisors: 1 7 71 193 313 497 1351 2191 13703 22223 60409 95921 155561 422863 4289039 30023273