68247240 has 128 divisors (see below), whose sum is σ = 221616000. Its totient is φ = 16754688.

The previous prime is 68247239. The next prime is 68247253. The reversal of 68247240 is 4274286.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83956 + ... + 84764.

It is an arithmetic number, because the mean of its divisors is an integer number (1731375).

Almost surely, 2^68247240 is an apocalyptic number.

68247240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68247240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110808000).

68247240 is an abundant number, since it is smaller than the sum of its proper divisors (153368760).

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

68247240 is a wasteful number, since it uses less digits than its factorization.

68247240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 68247240 is about 8261.1887764413. The cubic root of 68247240 is about 408.6595924582.

The spelling of 68247240 in words is "sixty-eight million, two hundred forty-seven thousand, two hundred forty".