28510066 has 8 divisors (see below), whose sum is σ = 46054764. Its totient is φ = 13158480.

The previous prime is 28510063. The next prime is 28510093. The reversal of 28510066 is 66001582.

It can be written as a sum of positive squares in 2 ways, for example, as 22610025 + 5900041 = 4755^2 + 2429^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28510063) 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, 548245 + ... + 548296.

Almost surely, 2^28510066 is an apocalyptic number.

28510066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28510066 is a deficient number, since it is larger than the sum of its proper divisors (17544698).

28510066 is a wasteful number, since it uses less digits than its factorization.

28510066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096556.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28510066 is about 5339.4818100636. The cubic root of 28510066 is about 305.4916945891.

The spelling of 28510066 in words is "twenty-eight million, five hundred ten thousand, sixty-six".