68442036 has 48 divisors (see below), whose sum is σ = 173793984. Its totient is φ = 20837376.

The previous prime is 68442029. The next prime is 68442053. The reversal of 68442036 is 63024486.

It is a junction number, because it is equal to n+sod(n) for n = 68441988 and 68442006.

It is a congruent number.

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, 12871 + ... + 17393.

It is an arithmetic number, because the mean of its divisors is an integer number (3620708).

Almost surely, 2^68442036 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 68442036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86896992).

68442036 is an abundant number, since it is smaller than the sum of its proper divisors (105351948).

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

68442036 is a wasteful number, since it uses less digits than its factorization.

68442036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4638 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 68442036 is about 8272.9702042253. The cubic root of 68442036 is about 409.0480312950.

The spelling of 68442036 in words is "sixty-eight million, four hundred forty-two thousand, thirty-six".