68722240 has 112 divisors (see below), whose sum is σ = 175564800. Its totient is φ = 25546752.

The previous prime is 68722231. The next prime is 68722253. The reversal of 68722240 is 4222786.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 541057 + ... + 541183.

Almost surely, 2^68722240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87782400).

68722240 is an abundant number, since it is smaller than the sum of its proper divisors (106842560).

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

68722240 is a wasteful number, since it uses less digits than its factorization.

68722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 68722240 is about 8289.8878158875. The cubic root of 68722240 is about 409.6054900387.

The spelling of 68722240 in words is "sixty-eight million, seven hundred twenty-two thousand, two hundred forty".