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6420246 = 237712153
BaseRepresentation
bin11000011111011100010110
3110002011220220
4120133130112
53120421441
6345335210
7105366630
oct30373426
913064826
106420246
113695698
122197506
13143a381
14bd1a50
1586c466
hex61f716

6420246 has 32 divisors (see below), whose sum is σ = 14888448. Its totient is φ = 1807680.

The previous prime is 6420221. The next prime is 6420259.

6420246 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1906 + ... + 4058.

It is an arithmetic number, because the mean of its divisors is an integer number (465264).

Almost surely, 26420246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6420246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7444224).

6420246 is an abundant number, since it is smaller than the sum of its proper divisors (8468202).

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

6420246 is a wasteful number, since it uses less digits than its factorization.

6420246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 6420246 is about 2533.8204356268. The cubic root of 6420246 is about 185.8591256114.

It can be divided in two parts, 6420 and 246, that added together give a palindrome (6666).

The spelling of 6420246 in words is "six million, four hundred twenty thousand, two hundred forty-six".