68226840 has 128 divisors (see below), whose sum is σ = 248140800. Its totient is φ = 16536960.

The previous prime is 68226803. The next prime is 68226857. The reversal of 68226840 is 4862286.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68226795 and 68226804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9009 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (1938600).

Almost surely, 2^68226840 is an apocalyptic number.

68226840 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 68226840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124070400).

68226840 is an abundant number, since it is smaller than the sum of its proper divisors (179913960).

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

68226840 is a wasteful number, since it uses less digits than its factorization.

68226840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5774 (or 5764 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 68226840 is about 8259.9539950293. The cubic root of 68226840 is about 408.6188704868.

The spelling of 68226840 in words is "sixty-eight million, two hundred twenty-six thousand, eight hundred forty".