28902566 has 32 divisors (see below), whose sum is σ = 54984960. Its totient is φ = 11066400.

The previous prime is 28902563. The next prime is 28902583. The reversal of 28902566 is 66520982.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28902563) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 7496 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (1718280).

Almost surely, 2^28902566 is an apocalyptic number.

28902566 is a deficient number, since it is larger than the sum of its proper divisors (26082394).

28902566 is a wasteful number, since it uses less digits than its factorization.

28902566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28902566 is about 5376.1106759441. The cubic root of 28902566 is about 306.8872182077.

The spelling of 28902566 in words is "twenty-eight million, nine hundred two thousand, five hundred sixty-six".