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1601216 = 26127197
BaseRepresentation
bin110000110111011000000
310000100110022
412012323000
5402214331
654153012
716416161
oct6067300
93010408
101601216
119a4021
12652768
13440a86
142d9768
1521967b
hex186ec0

1601216 has 28 divisors (see below), whose sum is σ = 3218688. Its totient is φ = 790272.

The previous prime is 1601209. The next prime is 1601219. The reversal of 1601216 is 6121061.

It is a happy number.

1601216 is an admirable number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1601194 and 1601203.

It is not an unprimeable number, because it can be changed into a prime (1601219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8030 + ... + 8226.

21601216 is an apocalyptic number.

1601216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609344).

1601216 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1601216 is a wasteful number, since it uses less digits than its factorization.

1601216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1601216 is about 1265.3916389798. The cubic root of 1601216 is about 116.9903320718.

Adding to 1601216 its reverse (6121061), we get a palindrome (7722277).

The spelling of 1601216 in words is "one million, six hundred one thousand, two hundred sixteen".

Divisors: 1 2 4 8 16 32 64 127 197 254 394 508 788 1016 1576 2032 3152 4064 6304 8128 12608 25019 50038 100076 200152 400304 800608 1601216