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491296 = 25131181
BaseRepresentation
bin1110111111100100000
3220221221011
41313330200
5111210141
614310304
74114231
oct1677440
9827834
10491296
11306133
121b8394
13142810
14cb088
159a881
hex77f20

491296 has 24 divisors (see below), whose sum is σ = 1042524. Its totient is φ = 226560.

The previous prime is 491279. The next prime is 491297. The reversal of 491296 is 692194.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 490000 + 1296 = 700^2 + 36^2 .

It is not an unprimeable number, because it can be changed into a prime (491297) 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, 175 + ... + 1006.

2491296 is an apocalyptic number.

It is an amenable number.

491296 is an abundant number, since it is smaller than the sum of its proper divisors (551228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491296 is a wasteful number, since it uses less digits than its factorization.

491296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1196 counting only the distinct ones).

The product of its digits is 3888, while the sum is 31.

The square root of 491296 is about 700.9251029889. The cubic root of 491296 is about 78.9067960260.

It can be divided in two parts, 491 and 296, that added together give a palindrome (787).

The spelling of 491296 in words is "four hundred ninety-one thousand, two hundred ninety-six".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 1181 2362 4724 9448 15353 18896 30706 37792 61412 122824 245648 491296