28575478 has 8 divisors (see below), whose sum is σ = 43860168. Its totient is φ = 13955424.

The previous prime is 28575473. The next prime is 28575509. The reversal of 28575478 is 87457582.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28575473) 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 3 ways as a sum of consecutive naturals, for example, 166051 + ... + 166222.

It is an arithmetic number, because the mean of its divisors is an integer number (5482521).

Almost surely, 2^28575478 is an apocalyptic number.

28575478 is a deficient number, since it is larger than the sum of its proper divisors (15284690).

28575478 is a wasteful number, since it uses less digits than its factorization.

28575478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332318.

The product of its digits is 627200, while the sum is 46.

The square root of 28575478 is about 5345.6036141861. The cubic root of 28575478 is about 305.7251508435.

The spelling of 28575478 in words is "twenty-eight million, five hundred seventy-five thousand, four hundred seventy-eight".