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82913211 = 3248718917
BaseRepresentation
bin1001111000100…
…10011110111011
312210000102112200
410330102132323
5132211210321
612121041243
72024515323
oct474223673
9183012480
1082913211
1142890a17
1223926223
1314240394
14b024283
15742bd26
hex4f127bb

82913211 has 12 divisors (see below), whose sum is σ = 120015792. Its totient is φ = 55159056.

The previous prime is 82913203. The next prime is 82913227. The reversal of 82913211 is 11231928.

It is not a de Polignac number, because 82913211 - 23 = 82913203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82913261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5076 + ... + 13841.

It is an arithmetic number, because the mean of its divisors is an integer number (10001316).

Almost surely, 282913211 is an apocalyptic number.

82913211 is a deficient number, since it is larger than the sum of its proper divisors (37102581).

82913211 is a wasteful number, since it uses less digits than its factorization.

82913211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19410 (or 19407 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 82913211 is about 9105.6691681611. The cubic root of 82913211 is about 436.0549740602.

The spelling of 82913211 in words is "eighty-two million, nine hundred thirteen thousand, two hundred eleven".

Divisors: 1 3 9 487 1461 4383 18917 56751 170253 9212579 27637737 82913211