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68200000 = 26551131
BaseRepresentation
bin1000001000010…
…10011001000000
311202022220210221
410010022121000
5114424400000
610433432424
71455455551
oct404123100
9152286727
1068200000
1135551740
121aa0b714
131118b43b
1490b4328
155ec261a
hex410a640

68200000 has 168 divisors, whose sum is σ = 190487808. Its totient is φ = 24000000.

The previous prime is 68199983. The next prime is 68200007. The reversal of 68200000 is 286.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68200007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2199985 + ... + 2200015.

It is an arithmetic number, because the mean of its divisors is an integer number (1133856).

Almost surely, 268200000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95243904).

68200000 is an abundant number, since it is smaller than the sum of its proper divisors (122287808).

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

68200000 is an equidigital number, since it uses as much as digits as its factorization.

68200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 68200000 is about 8258.3291288250. The cubic root of 68200000 is about 408.5652807805.

Adding to 68200000 its reverse (286), we get a palindrome (68200286).

The spelling of 68200000 in words is "sixty-eight million, two hundred thousand".