68166428 has 24 divisors (see below), whose sum is σ = 130376064. Its totient is φ = 30927600.

The previous prime is 68166421. The next prime is 68166431. The reversal of 68166428 is 82466186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68166421) 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, 30923 + ... + 33053.

It is an arithmetic number, because the mean of its divisors is an integer number (5432336).

Almost surely, 2^68166428 is an apocalyptic number.

It is an amenable number.

68166428 is a deficient number, since it is larger than the sum of its proper divisors (62209636).

68166428 is a wasteful number, since it uses less digits than its factorization.

68166428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2871 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 68166428 is about 8256.2962640642. The cubic root of 68166428 is about 408.4982299257.

The spelling of 68166428 in words is "sixty-eight million, one hundred sixty-six thousand, four hundred twenty-eight".