68442528 has 192 divisors, whose sum is σ = 229920768. Its totient is φ = 17310720.

The previous prime is 68442499. The next prime is 68442533. The reversal of 68442528 is 82524486.

It is a Cunningham number, because it is equal to 8273²-1.

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, 347326 + ... + 347522.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^68442528 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 68442528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114960384).

68442528 is an abundant number, since it is smaller than the sum of its proper divisors (161478240).

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

68442528 is a wasteful number, since it uses less digits than its factorization.

68442528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 267 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 68442528 is about 8272.9999395624. Note that the first 4 decimals coincide. The cubic root of 68442528 is about 409.0490114488.

The spelling of 68442528 in words is "sixty-eight million, four hundred forty-two thousand, five hundred twenty-eight".