28505446 has 8 divisors (see below), whose sum is σ = 42783264. Its totient is φ = 14244360.

The previous prime is 28505423. The next prime is 28505459. The reversal of 28505446 is 64450582.

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, 1776 + ... + 7756.

It is an arithmetic number, because the mean of its divisors is an integer number (5347908).

Almost surely, 2^28505446 is an apocalyptic number.

28505446 is a deficient number, since it is larger than the sum of its proper divisors (14277818).

28505446 is a wasteful number, since it uses less digits than its factorization.

28505446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 28505446 is about 5339.0491662842. The cubic root of 28505446 is about 305.4751922554.

The spelling of 28505446 in words is "twenty-eight million, five hundred five thousand, four hundred forty-six".