28584830 has 8 divisors (see below), whose sum is σ = 51452712. Its totient is φ = 11433928.

The previous prime is 28584827. The next prime is 28584859. The reversal of 28584830 is 3848582.

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

It is a super-2 number, since 2×28584830² = 1634185012257800, which contains 22 as substring.

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, 1429232 + ... + 1429251.

It is an arithmetic number, because the mean of its divisors is an integer number (6431589).

Almost surely, 2^28584830 is an apocalyptic number.

28584830 is a deficient number, since it is larger than the sum of its proper divisors (22867882).

28584830 is a wasteful number, since it uses less digits than its factorization.

28584830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858490.

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 28584830 is about 5346.4782801392. The cubic root of 28584830 is about 305.7584991309.

The spelling of 28584830 in words is "twenty-eight million, five hundred eighty-four thousand, eight hundred thirty".