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10668940 = 225533447
BaseRepresentation
bin101000101100…
…101110001100
3202002001000221
4220230232030
510212401230
61020401124
7156453532
oct50545614
922061027
1010668940
116027807
1236a61a4
1322971a9
1415ba152
15e0b27a
hexa2cb8c

10668940 has 12 divisors (see below), whose sum is σ = 22404816. Its totient is φ = 4267568.

The previous prime is 10668907. The next prime is 10668947. The reversal of 10668940 is 4986601.

It is a super-2 number, since 2×106689402 = 227652561447200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10668896 and 10668905.

It is not an unprimeable number, because it can be changed into a prime (10668947) 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, 266704 + ... + 266743.

It is an arithmetic number, because the mean of its divisors is an integer number (1867068).

Almost surely, 210668940 is an apocalyptic number.

10668940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10668940 is an abundant number, since it is smaller than the sum of its proper divisors (11735876).

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

10668940 is a wasteful number, since it uses less digits than its factorization.

10668940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533456 (or 533454 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 10668940 is about 3266.3343368369. The cubic root of 10668940 is about 220.1441204431.

The spelling of 10668940 in words is "ten million, six hundred sixty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 533447 1066894 2133788 2667235 5334470 10668940