28406968 has 16 divisors (see below), whose sum is σ = 54137160. Its totient is φ = 13970400.

The previous prime is 28406929. The next prime is 28407011. The reversal of 28406968 is 86960482.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28618 + ... + 29593.

Almost surely, 2^28406968 is an apocalyptic number.

It is an amenable number.

28406968 is a deficient number, since it is larger than the sum of its proper divisors (25730192).

28406968 is a wasteful number, since it uses less digits than its factorization.

28406968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58278 (or 58274 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 28406968 is about 5329.8187586446. The cubic root of 28406968 is about 305.1230104909.

The spelling of 28406968 in words is "twenty-eight million, four hundred six thousand, nine hundred sixty-eight".