28680902 has 8 divisors (see below), whose sum is σ = 43206696. Its totient is φ = 14278672.

The previous prime is 28680901. The next prime is 28680907. The reversal of 28680902 is 20908682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28680901) 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, 30308 + ... + 31239.

It is an arithmetic number, because the mean of its divisors is an integer number (5400837).

Almost surely, 2^28680902 is an apocalyptic number.

28680902 is a deficient number, since it is larger than the sum of its proper divisors (14525794).

28680902 is a wasteful number, since it uses less digits than its factorization.

28680902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61782.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 28680902 is about 5355.4553494544. The cubic root of 28680902 is about 306.1006617721.

The spelling of 28680902 in words is "twenty-eight million, six hundred eighty thousand, nine hundred two".