28760066 has 4 divisors (see below), whose sum is σ = 43140102. Its totient is φ = 14380032.

The previous prime is 28760059. The next prime is 28760089. The reversal of 28760066 is 66006782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25715041 + 3045025 = 5071^2 + 1745^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190015 + ... + 7190018.

Almost surely, 2^28760066 is an apocalyptic number.

28760066 is a deficient number, since it is larger than the sum of its proper divisors (14380036).

28760066 is a wasteful number, since it uses less digits than its factorization.

28760066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14380035.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 28760066 is about 5362.8412245749. The cubic root of 28760066 is about 306.3820324208.

The spelling of 28760066 in words is "twenty-eight million, seven hundred sixty thousand, sixty-six".