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10640791 = 72397547
BaseRepresentation
bin101000100101…
…110110010111
3202000121102101
4220211312113
510211001131
61020022531
7156305500
oct50456627
922017371
1010640791
116008647
123691a47
132287435
1415adba7
15e02c61
hexa25d97

10640791 has 12 divisors (see below), whose sum is σ = 12431928. Its totient is φ = 9081072.

The previous prime is 10640783. The next prime is 10640797. The reversal of 10640791 is 19704601.

It is not a de Polignac number, because 10640791 - 23 = 10640783 is a prime.

It is a super-2 number, since 2×106407912 = 226452866211362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640797) 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 11 ways as a sum of consecutive naturals, for example, 19180 + ... + 19726.

It is an arithmetic number, because the mean of its divisors is an integer number (1035994).

Almost surely, 210640791 is an apocalyptic number.

10640791 is a deficient number, since it is larger than the sum of its proper divisors (1791137).

10640791 is an equidigital number, since it uses as much as digits as its factorization.

10640791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 10640791 is about 3262.0225321110. The cubic root of 10640791 is about 219.9503400309.

The spelling of 10640791 in words is "ten million, six hundred forty thousand, seven hundred ninety-one".

Divisors: 1 7 49 397 547 2779 3829 19453 26803 217159 1520113 10640791