68280030 has 192 divisors, whose sum is σ = 228674880. Its totient is φ = 14370048.

The previous prime is 68280029. The next prime is 68280067. The reversal of 68280030 is 3008286.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 68279976 and 68280003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 171792 + ... + 172188.

It is an arithmetic number, because the mean of its divisors is an integer number (1191015).

Almost surely, 2^68280030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68280030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114337440).

68280030 is an abundant number, since it is smaller than the sum of its proper divisors (160394850).

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

68280030 is a wasteful number, since it uses less digits than its factorization.

68280030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 68280030 is about 8263.1731193289. The cubic root of 68280030 is about 408.7250300377.

The spelling of 68280030 in words is "sixty-eight million, two hundred eighty thousand, thirty".