28805486 has 4 divisors (see below), whose sum is σ = 43208232. Its totient is φ = 14402742.

The previous prime is 28805471. The next prime is 28805489. The reversal of 28805486 is 68450882.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7201370 + ... + 7201373.

It is an arithmetic number, because the mean of its divisors is an integer number (10802058).

Almost surely, 2^28805486 is an apocalyptic number.

28805486 is a deficient number, since it is larger than the sum of its proper divisors (14402746).

28805486 is a wasteful number, since it uses less digits than its factorization.

28805486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14402745.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 28805486 is about 5367.0742495330. The cubic root of 28805486 is about 306.5432345622.

The spelling of 28805486 in words is "twenty-eight million, eight hundred five thousand, four hundred eighty-six".