28679646 has 32 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 8963456.

The previous prime is 28679641. The next prime is 28679647. The reversal of 28679646 is 64697682.

It is a junction number, because it is equal to n+sod(n) for n = 28679595 and 28679604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28679641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48565 + ... + 49151.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^28679646 is an apocalyptic number.

28679646 is an abundant number, since it is smaller than the sum of its proper divisors (32284194).

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

28679646 is a wasteful number, since it uses less digits than its factorization.

28679646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088.

The product of its digits is 870912, while the sum is 48.

The square root of 28679646 is about 5355.3380845657. The cubic root of 28679646 is about 306.0961934323.

The spelling of 28679646 in words is "twenty-eight million, six hundred seventy-nine thousand, six hundred forty-six".