28584461 has 8 divisors (see below), whose sum is σ = 29473560. Its totient is φ = 27701568.

The previous prime is 28584443. The next prime is 28584473. The reversal of 28584461 is 16448582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6728836 + 21855625 = 2594^2 + 4675^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28584461 - 2¹⁸ = 28322317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28584481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8855 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (3684195).

Almost surely, 2^28584461 is an apocalyptic number.

It is an amenable number.

28584461 is a deficient number, since it is larger than the sum of its proper divisors (889099).

28584461 is a wasteful number, since it uses less digits than its factorization.

28584461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

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

The square root of 28584461 is about 5346.4437713306. The cubic root of 28584461 is about 305.7571834521.

The spelling of 28584461 in words is "twenty-eight million, five hundred eighty-four thousand, four hundred sixty-one".