28928946 has 16 divisors (see below), whose sum is σ = 58248000. Its totient is φ = 9577968.

The previous prime is 28928941. The next prime is 28928947. The reversal of 28928946 is 64982982.

It is a junction number, because it is equal to n+sod(n) for n = 28928895 and 28928904.

It is not an unprimeable number, because it can be changed into a prime (28928941) 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, 15286 + ... + 17073.

It is an arithmetic number, because the mean of its divisors is an integer number (3640500).

Almost surely, 2^28928946 is an apocalyptic number.

28928946 is an abundant number, since it is smaller than the sum of its proper divisors (29319054).

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

28928946 is a wasteful number, since it uses less digits than its factorization.

28928946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32513.

The product of its digits is 497664, while the sum is 48.

The square root of 28928946 is about 5378.5635628855. The cubic root of 28928946 is about 306.9805573600.

The spelling of 28928946 in words is "twenty-eight million, nine hundred twenty-eight thousand, nine hundred forty-six".