28905446 has 8 divisors (see below), whose sum is σ = 43460064. Its totient is φ = 14418760.

The previous prime is 28905421. The next prime is 28905463. The reversal of 28905446 is 64450982.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15905 + ... + 17628.

It is an arithmetic number, because the mean of its divisors is an integer number (5432508).

Almost surely, 2^28905446 is an apocalyptic number.

28905446 is a deficient number, since it is larger than the sum of its proper divisors (14554618).

28905446 is a wasteful number, since it uses less digits than its factorization.

28905446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33966.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28905446 is about 5376.3785209005. The cubic root of 28905446 is about 306.8974111415.

The spelling of 28905446 in words is "twenty-eight million, nine hundred five thousand, four hundred forty-six".