28680830 has 8 divisors (see below), whose sum is σ = 51625512. Its totient is φ = 11472328.

The previous prime is 28680829. The next prime is 28680881. The reversal of 28680830 is 3808682.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1434032 + ... + 1434051.

It is an arithmetic number, because the mean of its divisors is an integer number (6453189).

Almost surely, 2^28680830 is an apocalyptic number.

28680830 is a deficient number, since it is larger than the sum of its proper divisors (22944682).

28680830 is a wasteful number, since it uses less digits than its factorization.

28680830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868090.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 28680830 is about 5355.4486273327. The cubic root of 28680830 is about 306.1004056288.

The spelling of 28680830 in words is "twenty-eight million, six hundred eighty thousand, eight hundred thirty".