68280378 has 16 divisors (see below), whose sum is σ = 139466880. Its totient is φ = 22275776.

The previous prime is 68280371. The next prime is 68280391. The reversal of 68280378 is 87308286.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68280371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120783 + ... + 121346.

It is an arithmetic number, because the mean of its divisors is an integer number (8716680).

Almost surely, 2^68280378 is an apocalyptic number.

68280378 is an abundant number, since it is smaller than the sum of its proper divisors (71186502).

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

68280378 is a wasteful number, since it uses less digits than its factorization.

68280378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242181.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 68280378 is about 8263.1941765881. The cubic root of 68280378 is about 408.7257244138.

The spelling of 68280378 in words is "sixty-eight million, two hundred eighty thousand, three hundred seventy-eight".