28685946 has 16 divisors (see below), whose sum is σ = 58017600. Its totient is φ = 9454368.

The previous prime is 28685939. The next prime is 28685957. The reversal of 28685946 is 64958682.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28685895 and 28685904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26326 + ... + 27393.

It is an arithmetic number, because the mean of its divisors is an integer number (3626100).

Almost surely, 2^28685946 is an apocalyptic number.

28685946 is an abundant number, since it is smaller than the sum of its proper divisors (29331654).

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

28685946 is a wasteful number, since it uses less digits than its factorization.

28685946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53813.

The product of its digits is 829440, while the sum is 48.

The square root of 28685946 is about 5355.9262504258. The cubic root of 28685946 is about 306.1186049692.

The spelling of 28685946 in words is "twenty-eight million, six hundred eighty-five thousand, nine hundred forty-six".