28130486 has 8 divisors (see below), whose sum is σ = 42825720. Its totient is φ = 13855248.

The previous prime is 28130437. The next prime is 28130503. The reversal of 28130486 is 68403182.

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, 104831 + ... + 105098.

It is an arithmetic number, because the mean of its divisors is an integer number (5353215).

Almost surely, 2^28130486 is an apocalyptic number.

28130486 is a deficient number, since it is larger than the sum of its proper divisors (14695234).

28130486 is a wasteful number, since it uses less digits than its factorization.

28130486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209998.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28130486 is about 5303.8180587196. The cubic root of 28130486 is about 304.1298715066.

The spelling of 28130486 in words is "twenty-eight million, one hundred thirty thousand, four hundred eighty-six".