68212040 has 64 divisors (see below), whose sum is σ = 168860160. Its totient is φ = 24641280.

The previous prime is 68212037. The next prime is 68212073. The reversal of 68212040 is 4021286.

It is a junction number, because it is equal to n+sod(n) for n = 68211997 and 68212015.

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, 23045 + ... + 25835.

It is an arithmetic number, because the mean of its divisors is an integer number (2638440).

Almost surely, 2^68212040 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 68212040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84430080).

68212040 is an abundant number, since it is smaller than the sum of its proper divisors (100648120).

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

68212040 is a wasteful number, since it uses less digits than its factorization.

68212040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 68212040 is about 8259.0580576722. The cubic root of 68212040 is about 408.5893220148.

The spelling of 68212040 in words is "sixty-eight million, two hundred twelve thousand, forty".