28578622 has 16 divisors (see below), whose sum is σ = 45867600. Its totient is φ = 13314240.

The previous prime is 28578587. The next prime is 28578623. The reversal of 28578622 is 22687582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28578623) 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, 3847 + ... + 8482.

It is an arithmetic number, because the mean of its divisors is an integer number (2866725).

Almost surely, 2^28578622 is an apocalyptic number.

28578622 is a deficient number, since it is larger than the sum of its proper divisors (17288978).

28578622 is a wasteful number, since it uses less digits than its factorization.

28578622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12411.

The product of its digits is 107520, while the sum is 40.

The square root of 28578622 is about 5345.8976795296. The cubic root of 28578622 is about 305.7363628417.

The spelling of 28578622 in words is "twenty-eight million, five hundred seventy-eight thousand, six hundred twenty-two".