28928046 has 16 divisors (see below), whose sum is σ = 66121344. Its totient is φ = 8265144.

The previous prime is 28928023. The next prime is 28928047. The reversal of 28928046 is 64082982.

It is a junction number, because it is equal to n+sod(n) for n = 28927995 and 28928013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28928047) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 344340 + ... + 344423.

It is an arithmetic number, because the mean of its divisors is an integer number (4132584).

Almost surely, 2^28928046 is an apocalyptic number.

28928046 is an abundant number, since it is smaller than the sum of its proper divisors (37193298).

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

28928046 is a wasteful number, since it uses less digits than its factorization.

28928046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688775.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28928046 is about 5378.4798967738. The cubic root of 28928046 is about 306.9773738661.

The spelling of 28928046 in words is "twenty-eight million, nine hundred twenty-eight thousand, forty-six".