68338380 has 72 divisors (see below), whose sum is σ = 210346416. Its totient is φ = 16565120.

The previous prime is 68338379. The next prime is 68338399. The reversal of 68338380 is 8383386.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2554 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (2921478).

Almost surely, 2^68338380 is an apocalyptic number.

68338380 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 68338380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105173208).

68338380 is an abundant number, since it is smaller than the sum of its proper divisors (142008036).

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

68338380 is a wasteful number, since it uses less digits than its factorization.

68338380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9447 (or 9434 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 68338380 is about 8266.7030913176. The cubic root of 68338380 is about 408.8414248076.

The spelling of 68338380 in words is "sixty-eight million, three hundred thirty-eight thousand, three hundred eighty".