68442280 has 32 divisors (see below), whose sum is σ = 154470240. Its totient is φ = 27292480.

The previous prime is 68442277. The next prime is 68442287. The reversal of 68442280 is 8224486.

It is not an unprimeable number, because it can be changed into a prime (68442287) 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, 11415 + ... + 16345.

It is an arithmetic number, because the mean of its divisors is an integer number (4827195).

Almost surely, 2^68442280 is an apocalyptic number.

It is an amenable number.

68442280 is an abundant number, since it is smaller than the sum of its proper divisors (86027960).

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

68442280 is a wasteful number, since it uses less digits than its factorization.

68442280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289 (or 5285 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 68442280 is about 8272.9849510319. The cubic root of 68442280 is about 409.0485173881.

The spelling of 68442280 in words is "sixty-eight million, four hundred forty-two thousand, two hundred eighty".