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30332071 = 711439161
BaseRepresentation
bin111001110110…
…1010010100111
32010002000210001
41303231102213
530231111241
63002042131
7515550460
oct163552247
963060701
1030332071
1116137a30
12a1a9347
136390193
144057d67
1529e2431
hex1ced4a7

30332071 has 16 divisors (see below), whose sum is σ = 38700288. Its totient is φ = 23083200.

The previous prime is 30332069. The next prime is 30332111. The reversal of 30332071 is 17023303.

It is not a de Polignac number, because 30332071 - 21 = 30332069 is a prime.

It is a super-2 number, since 2×303320712 = 1840069062298082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30332021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270 + ... + 7891.

It is an arithmetic number, because the mean of its divisors is an integer number (2418768).

Almost surely, 230332071 is an apocalyptic number.

30332071 is a deficient number, since it is larger than the sum of its proper divisors (8368217).

30332071 is a wasteful number, since it uses less digits than its factorization.

30332071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 30332071 is about 5507.4559462605. The cubic root of 30332071 is about 311.8655149906.

Adding to 30332071 its reverse (17023303), we get a palindrome (47355374).

The spelling of 30332071 in words is "thirty million, three hundred thirty-two thousand, seventy-one".

Divisors: 1 7 11 43 77 301 473 3311 9161 64127 100771 393923 705397 2757461 4333153 30332071