28775546 has 8 divisors (see below), whose sum is σ = 43252704. Its totient is φ = 14357980.

The previous prime is 28775521. The next prime is 28775573. The reversal of 28775546 is 64557782.

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

It is a junction number, because it is equal to n+sod(n) for n = 28775497 and 28775506.

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, 13670 + ... + 15633.

It is an arithmetic number, because the mean of its divisors is an integer number (5406588).

Almost surely, 2^28775546 is an apocalyptic number.

28775546 is a deficient number, since it is larger than the sum of its proper divisors (14477158).

28775546 is a wasteful number, since it uses less digits than its factorization.

28775546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29796.

The product of its digits is 470400, while the sum is 44.

The square root of 28775546 is about 5364.2842952252. The cubic root of 28775546 is about 306.4369922296.

The spelling of 28775546 in words is "twenty-eight million, seven hundred seventy-five thousand, five hundred forty-six".