68428386 has 48 divisors (see below), whose sum is σ = 168080640. Its totient is φ = 19945440.

The previous prime is 68428379. The next prime is 68428387. The reversal of 68428386 is 68382486.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68428387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3250 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (3501680).

Almost surely, 2^68428386 is an apocalyptic number.

68428386 is an abundant number, since it is smaller than the sum of its proper divisors (99652254).

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

68428386 is a wasteful number, since it uses less digits than its factorization.

68428386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15431 (or 15428 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 68428386 is about 8272.1451873139. The cubic root of 68428386 is about 409.0208361326.

The spelling of 68428386 in words is "sixty-eight million, four hundred twenty-eight thousand, three hundred eighty-six".