68988280 has 32 divisors (see below), whose sum is σ = 156657600. Its totient is φ = 27340416.

The previous prime is 68988253. The next prime is 68988317. The reversal of 68988280 is 8288986.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3552 + ... + 12271.

It is an arithmetic number, because the mean of its divisors is an integer number (4895550).

Almost surely, 2^68988280 is an apocalyptic number.

It is an amenable number.

68988280 is an abundant number, since it is smaller than the sum of its proper divisors (87669320).

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

68988280 is a wasteful number, since it uses less digits than its factorization.

68988280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15943 (or 15939 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 68988280 is about 8305.9183718599. The cubic root of 68988280 is about 410.1333692627.

The spelling of 68988280 in words is "sixty-eight million, nine hundred eighty-eight thousand, two hundred eighty".