68218038 has 80 divisors (see below), whose sum is σ = 178886400. Its totient is φ = 19023984.

The previous prime is 68218027. The next prime is 68218061. The reversal of 68218038 is 83081286.

It is a super-3 number, since 3×68218038³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68217993 and 68218011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 48063 + ... + 49461.

It is an arithmetic number, because the mean of its divisors is an integer number (2236080).

Almost surely, 2^68218038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68218038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89443200).

68218038 is an abundant number, since it is smaller than the sum of its proper divisors (110668362).

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

68218038 is a wasteful number, since it uses less digits than its factorization.

68218038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463 (or 1454 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 68218038 is about 8259.4211661593. The cubic root of 68218038 is about 408.6012976470.

The spelling of 68218038 in words is "sixty-eight million, two hundred eighteen thousand, thirty-eight".