68022780 has 144 divisors (see below), whose sum is σ = 234765216. Its totient is φ = 14622720.

The previous prime is 68022769. The next prime is 68022781. The reversal of 68022780 is 8722086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68022781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49300 + ... + 50660.

It is an arithmetic number, because the mean of its divisors is an integer number (1630314).

Almost surely, 2^68022780 is an apocalyptic number.

68022780 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 68022780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117382608).

68022780 is an abundant number, since it is smaller than the sum of its proper divisors (166742436).

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

68022780 is a wasteful number, since it uses less digits than its factorization.

68022780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 68022780 is about 8247.5923759604. The cubic root of 68022780 is about 408.2110835851.

The spelling of 68022780 in words is "sixty-eight million, twenty-two thousand, seven hundred eighty".