28584622 has 16 divisors (see below), whose sum is σ = 47215872. Its totient is φ = 12870520.

The previous prime is 28584613. The next prime is 28584623. The reversal of 28584622 is 22648582.

It is a super-2 number, since 2×28584622² = 1634161229765768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28584623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3718 + ... + 8425.

It is an arithmetic number, because the mean of its divisors is an integer number (2950992).

Almost surely, 2^28584622 is an apocalyptic number.

28584622 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28584622 is a deficient number, since it is larger than the sum of its proper divisors (18631250).

28584622 is a wasteful number, since it uses less digits than its factorization.

28584622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12263.

The product of its digits is 61440, while the sum is 37.

The square root of 28584622 is about 5346.4588280468. The cubic root of 28584622 is about 305.7577575030.

The spelling of 28584622 in words is "twenty-eight million, five hundred eighty-four thousand, six hundred twenty-two".