68531232 has 192 divisors, whose sum is σ = 229146624. Its totient is φ = 17418240.

The previous prime is 68531201. The next prime is 68531249. The reversal of 68531232 is 23213586.

It is a self number, because there is not a number n which added to its sum of digits gives 68531232.

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, 539553 + ... + 539679.

It is an arithmetic number, because the mean of its divisors is an integer number (1193472).

Almost surely, 2^68531232 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 68531232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114573312).

68531232 is an abundant number, since it is smaller than the sum of its proper divisors (160615392).

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

68531232 is a wasteful number, since it uses less digits than its factorization.

68531232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 223 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 68531232 is about 8278.3592577273. The cubic root of 68531232 is about 409.2256492820.

The spelling of 68531232 in words is "sixty-eight million, five hundred thirty-one thousand, two hundred thirty-two".