68432224 has 72 divisors (see below), whose sum is σ = 165042360. Its totient is φ = 27772416.

The previous prime is 68432219. The next prime is 68432261. The reversal of 68432224 is 42223486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28644 + ... + 30940.

It is an arithmetic number, because the mean of its divisors is an integer number (2292255).

Almost surely, 2^68432224 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 68432224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82521180).

68432224 is an abundant number, since it is smaller than the sum of its proper divisors (96610136).

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

68432224 is a wasteful number, since it uses less digits than its factorization.

68432224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340 (or 2325 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 68432224 is about 8272.3771674169. The cubic root of 68432224 is about 409.0284830207.

The spelling of 68432224 in words is "sixty-eight million, four hundred thirty-two thousand, two hundred twenty-four".