28490066 has 8 divisors (see below), whose sum is σ = 46620144. Its totient is φ = 12950020.

The previous prime is 28490053. The next prime is 28490069. The reversal of 28490066 is 66009482.

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 (28490069) 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, 647480 + ... + 647523.

It is an arithmetic number, because the mean of its divisors is an integer number (5827518).

Almost surely, 2^28490066 is an apocalyptic number.

28490066 is a deficient number, since it is larger than the sum of its proper divisors (18130078).

28490066 is a wasteful number, since it uses less digits than its factorization.

28490066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295016.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 28490066 is about 5337.6086405805. The cubic root of 28490066 is about 305.4202430634.

It can be divided in two parts, 28 and 490066, that added together give a palindrome (490094).

The spelling of 28490066 in words is "twenty-eight million, four hundred ninety thousand, sixty-six".