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82906449 = 347587989
BaseRepresentation
bin1001111000100…
…00110101010001
312210000002021020
410330100311101
5132211001244
612120550053
72024456523
oct474206521
9183002236
1082906449
114288692a
1223922329
131423a292
14b021a13
157429d19
hex4f10d51

82906449 has 8 divisors (see below), whose sum is σ = 112894080. Its totient is φ = 54094896.

The previous prime is 82906441. The next prime is 82906463. The reversal of 82906449 is 94460928.

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

It is not a de Polignac number, because 82906449 - 23 = 82906441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82906449.

It is not an unprimeable number, because it can be changed into a prime (82906441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293854 + ... + 294135.

It is an arithmetic number, because the mean of its divisors is an integer number (14111760).

Almost surely, 282906449 is an apocalyptic number.

It is an amenable number.

82906449 is a deficient number, since it is larger than the sum of its proper divisors (29987631).

82906449 is a wasteful number, since it uses less digits than its factorization.

82906449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588039.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 82906449 is about 9105.2978534477. The cubic root of 82906449 is about 436.0431195606.

It can be divided in two parts, 82 and 906449, that added together give a triangular number (906531 = T1346).

The spelling of 82906449 in words is "eighty-two million, nine hundred six thousand, four hundred forty-nine".

Divisors: 1 3 47 141 587989 1763967 27635483 82906449