68428428 has 24 divisors (see below), whose sum is σ = 163064832. Its totient is φ = 22323984.

The previous prime is 68428421. The next prime is 68428447. The reversal of 68428428 is 82482486.

It is a self number, because there is not a number n which added to its sum of digits gives 68428428.

It is not an unprimeable number, because it can be changed into a prime (68428421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60100 + ... + 61227.

It is an arithmetic number, because the mean of its divisors is an integer number (6794368).

Almost surely, 2^68428428 is an apocalyptic number.

It is an amenable number.

68428428 is an abundant number, since it is smaller than the sum of its proper divisors (94636404).

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

68428428 is a wasteful number, since it uses less digits than its factorization.

68428428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121381 (or 121379 counting only the distinct ones).

The product of its digits is 196608, while the sum is 42.

The square root of 68428428 is about 8272.1477259536. The cubic root of 68428428 is about 409.0209198156.

The spelling of 68428428 in words is "sixty-eight million, four hundred twenty-eight thousand, four hundred twenty-eight".