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BaseRepresentation
bin1001111011000110
32001202102
421323012
52300041
6512102
7226334
oct117306
961672
1040646
11285a1
121b632
1315668
1410b54
15c09b
hex9ec6

40646 has 4 divisors (see below), whose sum is σ = 60972. Its totient is φ = 20322.

The previous prime is 40639. The next prime is 40693. The reversal of 40646 is 64604.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

40646 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160 + ... + 10163.

It is an arithmetic number, because the mean of its divisors is an integer number (15243).

240646 is an apocalyptic number.

40646 is a deficient number, since it is larger than the sum of its proper divisors (20326).

40646 is a wasteful number, since it uses less digits than its factorization.

40646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20325.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40646 is about 201.6085315655. The cubic root of 40646 is about 34.3826440301.

It can be divided in two parts, 40 and 646, that added together give a palindrome (686).

The spelling of 40646 in words is "forty thousand, six hundred forty-six".

Divisors: 1 2 20323 40646