68843280 has 160 divisors (see below), whose sum is σ = 236234880. Its totient is φ = 16445440.

The previous prime is 68843267. The next prime is 68843309. The reversal of 68843280 is 8234886.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 234814 + ... + 235106.

It is an arithmetic number, because the mean of its divisors is an integer number (1476468).

Almost surely, 2^68843280 is an apocalyptic number.

68843280 is a gapful number since it is divisible by the number (60) 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 68843280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118117440).

68843280 is an abundant number, since it is smaller than the sum of its proper divisors (167391600).

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

68843280 is a wasteful number, since it uses less digits than its factorization.

68843280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 68843280 is about 8297.1850648277. The cubic root of 68843280 is about 409.8458274193.

It can be divided in two parts, 68 and 843280, that added together give a palindrome (843348).

The spelling of 68843280 in words is "sixty-eight million, eight hundred forty-three thousand, two hundred eighty".