68363428 has 36 divisors (see below), whose sum is σ = 141815772. Its totient is φ = 28741440.

The previous prime is 68363417. The next prime is 68363437. The reversal of 68363428 is 82436386.

It can be written as a sum of positive squares in 2 ways, for example, as 32626944 + 35736484 = 5712^2 + 5978^2 .

It is a super-3 number, since 3×68363428³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7098 + ... + 13678.

It is an arithmetic number, because the mean of its divisors is an integer number (3939327).

Almost surely, 2^68363428 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 68363428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70907886).

68363428 is an abundant number, since it is smaller than the sum of its proper divisors (73452344).

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

68363428 is a wasteful number, since it uses less digits than its factorization.

68363428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6652 (or 6643 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 68363428 is about 8268.2179458454. The cubic root of 68363428 is about 408.8913694561.

The spelling of 68363428 in words is "sixty-eight million, three hundred sixty-three thousand, four hundred twenty-eight".