68878280 has 32 divisors (see below), whose sum is σ = 159978240. Its totient is φ = 26662080.

The previous prime is 68878279. The next prime is 68878301. The reversal of 68878280 is 8287886.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26534 + ... + 29013.

It is an arithmetic number, because the mean of its divisors is an integer number (4999320).

Almost surely, 2^68878280 is an apocalyptic number.

It is an amenable number.

68878280 is an abundant number, since it is smaller than the sum of its proper divisors (91099960).

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

68878280 is a wasteful number, since it uses less digits than its factorization.

68878280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55589 (or 55585 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 68878280 is about 8299.2939458727. The cubic root of 68878280 is about 409.9152710102.

The spelling of 68878280 in words is "sixty-eight million, eight hundred seventy-eight thousand, two hundred eighty".