28680550 has 36 divisors (see below), whose sum is σ = 54957420. Its totient is φ = 11135520.

The previous prime is 28680541. The next prime is 28680551. The reversal of 28680550 is 5508682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28680551) 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 17 ways as a sum of consecutive naturals, for example, 68241 + ... + 68659.

It is an arithmetic number, because the mean of its divisors is an integer number (1526595).

Almost surely, 2^28680550 is an apocalyptic number.

28680550 is a deficient number, since it is larger than the sum of its proper divisors (26276870).

28680550 is a wasteful number, since it uses less digits than its factorization.

28680550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 28680550 is about 5355.4224856681. The cubic root of 28680550 is about 306.0994095117.

The spelling of 28680550 in words is "twenty-eight million, six hundred eighty thousand, five hundred fifty".