68146428 has 96 divisors (see below), whose sum is σ = 190568448. Its totient is φ = 18547200.

The previous prime is 68146423. The next prime is 68146453. The reversal of 68146428 is 82464186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68146423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161658 + ... + 162078.

It is an arithmetic number, because the mean of its divisors is an integer number (1985088).

Almost surely, 2^68146428 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 68146428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95284224).

68146428 is an abundant number, since it is smaller than the sum of its proper divisors (122422020).

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

68146428 is a wasteful number, since it uses less digits than its factorization.

68146428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523 (or 521 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 68146428 is about 8255.0849783633. The cubic root of 68146428 is about 408.4582749509.

The spelling of 68146428 in words is "sixty-eight million, one hundred forty-six thousand, four hundred twenty-eight".