28328946 has 8 divisors (see below), whose sum is σ = 56657904. Its totient is φ = 9442980.

The previous prime is 28328941. The next prime is 28329011. The reversal of 28328946 is 64982382.

It is a sphenic number, since it is the product of 3 distinct primes.

28328946 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28328898 and 28328907.

It is not an unprimeable number, because it can be changed into a prime (28328941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360740 + ... + 2360751.

It is an arithmetic number, because the mean of its divisors is an integer number (7082238).

Almost surely, 2^28328946 is an apocalyptic number.

28328946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28328946 is a wasteful number, since it uses less digits than its factorization.

28328946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721496.

The product of its digits is 165888, while the sum is 42.

The square root of 28328946 is about 5322.4943400627. The cubic root of 28328946 is about 304.8434061329.

The spelling of 28328946 in words is "twenty-eight million, three hundred twenty-eight thousand, nine hundred forty-six".